Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant's customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. As an Amazon Associate we may earn from qualifying purchases. We may receive a commission from purchases made through links on our site, which will help us continue to provide you with value.
Binder Accessories Categories
Best Choice ColourHide 
ColourHide Bindermate 2 Hole Punch Black 9753102J Ideal for A4 sized bindersZelten 
4 Pack A5 6 Hole Binder Accessory Combo Set - Binder Divider, Pocket, Zipper Folder, Name Card Holder for Personal Organ Material: made of PVC, quality and waterproof material which resist tearing, able to protect your items from water and dAZUREAL 
8 Pack Binder Organizer, Plastic Binder Pockets for 3 Ring Binder Folders with Label for School Supplies and Documents, Azureal Binder Dividers with Pockets 8PBest Value Healvian 
Healvian A5 Binder Dividers Set of 6 Detachable Pp Page Tabs Pink Notebook Index Dividers for 3 Ring Binder Organiser Pl Efficient Organization: These A5 binder dividers with tabs help quickly categorize and access your notes, improving prod15% Off AMTAM 
AMTAM A5 Refill Paper Set, A5 Flipchart Paper with 6 Holes and Housekeeping Cards, Zip Pockets, Dividers, Rulers, Sticky Extensive A5 refill accessories: 20 sheets of landscape paper, 20 sheets of squared paper, 20 sheets of white paper, 20WITHYU 
30 Pack 60 Pockets 5x7' Ultra-Clear Photocard Sleeves for 6 Ring A5 Binder, Double-Sided 1 Pocket Photo Pages, Top Loadi 1, Double-Sided Photo Album Refill Pages: Our photo sheet protector provides double capacity that you can put total 2 phZelten 
2 Pack A5 6 Holes Page Marker Ruler Plastic Binder Ruler Divider Ruler for Journal Magazine Notebook (GRuler, A5) Material: made of PVC, quality and waterproof material which resist tearing, able to protect your items from water and d15% Off MAIHUO MAIHUO 60Pcs Metal Binder Rings, 5cm Index Card Binder Ring,3.8cm Snap Close Hinged Ring,4 Size Hinged Rings [Package includes]: 4 different sizes of binder rings, consisting of 30 pieces of 1-inch binder rings, 15 pieces of 1.2-Forvencer Forvencer Pencil Pouch for 3 Ring Binder, Large Pencil Case Pouch with Zipper, Soft Fabric Pen Bag with Clear Window Bin Easier Sorting and Storage: Two zippered compartments make it easy to organize and store your supplies. It’s 3-hole-puncAntner Antner 12pcs Binder Pockets A6 Size 6 Holes Binder Zipper Folders for 6-Ring Notebook Binder Loose Leaf Bags, Waterproof Size: 6.9 x 4.1 inch, can keep bill, money, vouchers, name card, credit cards, ID card etc tidy and organizedAmazon Basics Amazon Basics 3-Ring Binder Plastic Divider Set, 3-Hole Punched Letter-Size 8-Tab Dividers - 8-Pack, Multicolor 8 tabbed plastic dividers (8-pack) for keeping binders neatly organized and presentableAUEAR AUEAR, 12 Pack A5 Binder Index Dividers Plastic Insertable Tab Translucent for 6-Ring Planner Cards Notebook Travel Diar Package Included: 12 Sheets (2 Sets) A5 Binder Index Dividers, 1 Set of 6 Sheets.Divider Size: 8.35*5.75inchYharnamite Yharnamite 100 Pcs Binder Rings, Colourful Index Card Rings, Binder Clips, 3cm Metal Loose Leaf Binder Rings, Book Binde 【Package Contents】You will receive 100 pcs binder rings, a total of 10 colors, 10 pcs for each color, enough for your daDANRONG DANRONG 97 PCS Office Supplies for Women, Paper Clips, Binder Clips and Push Pins Set, Paperclips Thumb Tacks School and Exquisite Office Supplies Set: The set contains 4 essential office supplies, including 7 medium-sized binders, 20 small-Daleweo 120 Pcs Binder Rings, Openable Binding Ring with Storage Box, Metal Loose Leaf Binders Book Rings for Photo Albums, Note 【Comprehensive Set】Comes with 120 ring binder rings and a clear plastic storage case. An ideal set for everyday documentQuttly A5 Black Paper Tab Dividers with Blank Tabs, 15 PCS Customizable Dividers for Binders, Planners, Journals, Notebooks and 📚 Customizable Organization: Label your own categories with these blank tab dividers for a personalized and efficient fAmazon Basics Amazon Basics Clear Sheet Protectors for 3 Ring Binder, 21.59 x 27.94 cm, 200-Pack 200-pack of clear sheet protectors for organizing, storing and protecting 21.59 x 27.94-cm sheets of paperForvencer Forvencer Binder Pocket, 10 Pack Super Heavyweight Poly Binder Pocket with Hook and Loop Fasteners Closure, Binder Folde Easy Storage: 3 Holes punched, fit for standard 3 ring binders. Hook & Loop Fasteners Closure. Our transparent binder foUltimate Guard Ultimate Guard Card Dividers (Black) Card Game Accessoriesnewestor Travelers Notebook Accessories Kit - Kraft File Folder, Zipper Case, Pen Holder, Binder Clip and 2 Elastic Bands A Must Have beginner's kit for your travelers notebookAntner Antner Letter Size Binder Pockets 3 Holes Zipper Binder Folders for Ring Binder Loose Leaf Bags, Waterproof Pouch Docume Antner's heavy-duty zipper binder pockets made from tear-resistant PVC; Acid-free & archival-safe material prevents inkHAIKING HAIKING Metal Wire Binder Clips, 10 PCS Colorful Hollow Binder Office Supplies for Hold Papers, Document Organize (33 x 【Durable Material】These paper binder clips are made of high quality metal to ensure long-term use. They are durable andBetterJonny 25Pcs A5 Binder Pockets, BetterJonny 6 Holes Zipper Cash Envelopes Clear Pouch Folders Waterproof PVC Document Pouch Fil ★Material:The cash stuffing envelopes are made of high quality PVC,waterproof,resists tearing and storage safe.Zelten Index Tabs for A5/A6 6-Holes Cover Round Ring View Binder File Folder Loose Leaf Sheet Protectors Binder Cover Protector Index Tabs for A5/A6 6-Holes Cover Round Ring View Binder File Folder Loose Leaf Sheet Protectors Binder Cover ProtectorWanfoou D-Shaped Ring Binder Mechanism, 6 PCS Metal 2-Ring Binder Mechanism Replacement Kit, for Paper Storage, folders, Sliders Metal Material: Ring binder mechanism is made of high quality metal with good corrosion and rust resistance, even if repCardinal Cardinal Expanding Pocket Poly Divider, 5-Tab, Multi-Color (84012CB) Durable plastic dividers for 3 ring binders are wear and tear resistant; these tab dividers won’t fray at the edges or rLyrkonety Lyrkonety Photocard Binder Sleeves 30 Pack, 240 Pockets Ultra-Clear 2.5x3.5 Double-Sided 4 Pocket Photo Pages for 6 Ring STORAGE CAPACITY: Double-sided photocard binder refill pages with 240 total pockets, holding 8 photos per sheet across 3AVERY Avery Big Tab Write & Erase Durable Plastic Dividers for 3 Ring Binders, 5-Tab Set, Bright Multicolor, 1 Set (16129) Reuse dividers again and again with our write and erase durable plastic binder dividersFinocam Finocam Removable 4-Ring Binder Accessory ℹ️ MODEL: J034. Removable 4-ring accessory designed to be added to Finocam document holders, allowing you to create yourPEUTIER 25 Sheets Money Saving Budget Binder Inserts, Numbered 1-100 A5 Money Saving Binder Refills for Replacement Money Organi Package Includes: You will receive 25 sheets of money saving binder inserts, numbered 1-100. Supplementary and replacemeIKEEPVOX IKEEPVOX 12 Pieces Multicolor A4 Punched Pockets – Expandable Plastic Wallets with 11 Holes & Button | Large Capacity Bi 【Convenient and Secure Usage】Featuring a clear design with label pockets and secure snap buttons, these wallets allow quAVERY AVERY 8-Tab Binder Dividers, Write & Erase Multicolor Big Tabs, 6 Sets, School Binder Organizers (23079) - 73079 Versatile and tough; sturdy paper dividers have writable tabs that you can erase and reuse as your school schedule and c21% Off Ultimate Guard Premium Comic Dividers Card Sleeves (25 Piece), White New, optimized size (183 x 280 mm) for better visibility of the tabs and still perfectly sized to fit inside all standarAVERY Avery 12 Tab Dividers for 3 Ring Binders, Customizable Table of Contents, Multicolor Tabs, 1 Set (11141) Organize tab dividers quickly with the printable table of contents sheetTotority Totority 5Pcs A5 Binder Dividers with 3 Holes Punched, Index Tab Insert Dividers for Ring Binders and Lever Arch Files, Easy to use: binder organizer tabs let you add or remove divider tab sheets for binder quickly, so you can update noteboAVERY Avery Insertable Style Edge Plastic Dividers for 3 Ring Binders, 8-Tab Set, Assorted White Frosted Designs, 1 Set (11291 Unique, oval tabs give your binder dividers a distinctive look while the special tab design keeps inserts secureMlife Mlife Cash Envelope, 6 Holes Budget Binder Pockets,Zipper Folders for A6 Size Notebook Binder,Cash Organizer Money Savin Keep Item Organized -The cash envelopes can store your cash, coins, invoices, movie tickets, receipts, coupons, and otheZelten Zelten Refills/Loose Leaves for A5 Cover Ring Binder/Personal Organizer/Planner(A5 6 Holes, White Cover only) PP Cover, water repellent and lightweight with bandxiaaofea xiaaofea 20pcs Plastic Binder Spine Clips, Double-Hole Loose Leaf Binder Clips for Office, Documents, Notebook and Plann 【Binding clips】They are very lightweight and portable, and you can use them at home or office, and more,book binding macDaleweo 120 Pcs Binder Rings, Openable Binding Ring with Storage Box, Metal Loose Leaf Binders Book Rings for Photo Albums, Note 【Comprehensive Set】Comes with 120 ring binder rings and a clear plastic storage case. An ideal set for everyday documentSamsill Samsill 50 Pack 4 Pocket Clear Sheet Protectors, Card Protectors for Postcards, Index Cards, Couponing, and Gardan Seeds HIGH QUALITY - Made from high-quality polypropylene, these plastic sleeves are not only heavy duty but ultra clear. Stronewestor A5 Travelers Notebook Accessories Kit - Kraft File Folder, Zipper Case, Pen Holder, Binder Clip and 2 Elastic Bands A Must Have beginner's kit for your travelers notebookCREECHWA CREECHWA Gold Paper Clips and Binder Clips Set, Metal Assorted Sized Binders with Push Pins, Cute Gold Office Supplies f Ultimate Organization Kit - Unveiling the perfect binder paper clips assorted sized package, complete with 7 medium bindIoklin A5 Binder Pockets with 6 Holes for Ring Binders, 12 PCS Clear PVC Document Filing and Storage Organizer for School Offic Ideal A5 Size & Compatibility: Designed specifically for A5 binders and folders, these pockets feature 6 holes for seamlSamsill Samsill Recipe Card Holders, 4x6, 50 Count, Clear Polypropylene, Letter Size, Top Loading, Archival Safe Protect And View All Your Recipes - Keep all your recipes in one place! Create your own recipe book, family cookbook, orAVERY Avery 5-Tab Plastic Binder Dividers with Pockets, Insertable Multicolor Big Tabs, 3 Sets (11906) Durable And Reliable: Each Avery plastic divider is crafted from durable materials, allowing these 3 ring binder dividerAVERY Avery 1-31 Tab Dividers for 3 Ring Binders, Customizable Table of Contents, Multicolor Tabs, 1 Set (11846) Contemporary arched divider tabs feature a vibrantly multicolored design with preprinted tab numbersTEMPNAP TEMPNAP 5 Pcs A5 6-Ring Metal Binder Mechanism Replacement Kit for Loose Leaf Binder DIY Notebook Accessories Office Sta Loose leaf binding spines:they are very lightweight and portable, and you can use them at home, school or office, and moNUOBESTY NUOBESTY 50pcs A5 Binder Covers Matte Plastic Sleeves 0.4mm Thick Document Protectors for Reports and Presentations Offi Professional Document Protection: Transparent matte film sheet protectors feature a high transparent design that enhanceGudalea A6 Budget Binder with Cash Envelopes Budget Planner, Leather Ring Binder Notebook with 6PCS A6 Zipper Storage Bag, 12PCS High Quality: Made of PU leather, budget planner has clear texture, delicate feel. Premium zipper open and close smoothlTopHomer 50Pcs Multicolor Binder Clips, Reusable Clips Paper Clam Clip for Fixing Loose Leaf Paper Bookbinding Document Office Ho 【Protect the Paper】Compared with staples and paper clips, the clips of this dispenser will not damage and mark the paperNatSumeBasics NatSumeBasics 12 A5 Binder Dividers with Tabs Monthly A5 Planner Inserts Plastic Index Dividers for 6-Ring Binder Access 【STUNNING NEW ARRIVAL】- The A5 binder dividers are made of high-quality, eco-friendly PP with 6 punched holes for durabiArnos Arnos Hang-A-Plan General Plan Binder Clamp, A2 Size, Silver Easy open spring loaded anti-jam Clamp with wing nuts23% Off Amazon Basics Amazon Basics Two Pocket Plastic Dividers with 5 Tabs, Multicolor, Pack of 3 Sets 5-tab set of 2-pocket plastic dividers (3-pack) for keeping binders neatly organized and presentableAmazon Basics Amazon Basics Two Pocket Plastic Dividers with 5 Tabs, Multicolor, Pack of 3 Sets 5-tab set of 2-pocket plastic dividers (3-pack) for keeping binders neatly organized and presentableSagaSave 10Pcs Paper Binder Clips with Hollow Design Multi-Colors Foldback Clamps Metal Paper Binder Clips Large for Office Stati 【Variety of Sizes and Colors】: Available in two sizes (19mm for small and 32mm for medium) and six vibrant colors, our clasuroa lasuroa Paper Clip Holder & Organizer, Stainless Steel Desk Storage Bowl Desktop Decor Office Accessories for Binder Cli Product Content: You will receive one piece of stylish paper clip holder, a practical accessory to help you organize youORGPRO A5 Colorful 6-Hole Punched Graph Ruled Refills Inserts for Personal Size Organizer Binder, 5-Color Loose Leaf Planner Fi Loose leaf filler paper fits the popular 6 ring personal size binders/planners.SagaSave 10Pcs Paper Binder Clips with Hollow Design Multi-Colors Foldback Clamps Metal Paper Binder Clips Large for Office Stati 【Variety of Sizes and Colors】: Available in two sizes (19mm for small and 32mm for medium) and six vibrant colors, our cGeneric Adjustable Elastic Band Pen Holder for Notebooks, 2 Packs PU Leather Pen Sleeve Pouch, Journal Pencil Holder for Noteboo 🔗 Secure & Adjustable Fit: The pen holder features an elastic band that easily fits a variety of notebooks, planners, aSEWACC SEWACC A5 22.5x25cm Black Plastic Lever Arch File Folder Clip and Finger Grip Hole, Office Document Organizer, Sturdy Tw Secure Document Holding: Equipped with a stainless steel clip featuring high elasticity to firmly hold your papers in plSagaSave 10Pcs Paper Binder Clips with Hollow Design Multi-Colors Foldback Clamps Metal Paper Binder Clips Large for Office Stati 【Variety of Sizes and Colors】: Available in two sizes (19mm for small and 32mm for medium) and six vibrant colors, our cLOORGVEL LOORGVEL 4Pcs Scrapbook Binder Rings with Stainless Steel Clips, A5 A6 6-Hole Segmented Loose Leaf Binders for Office, S Office binder supplies:suitable for most people, such as students, teachers, etc, with a wide range of applications,pastZelten A6/ A5 6-Holes Felt Cover Round Ring View Binder File Folder for Loose Leaf Sheet Protectors/Notebook Refill/DIY Scrapbo Felt Cover, warm and lightweight, with pen holder and card slots inside, and Grid Graph,Dot,Blank,Line refiller 20 sheetSEIWEI SEIWEI 21 Piece Bookbinding Tools Set, Bone Folder Creaser Waxed Linen Thread Wooden Handle Awl Large Eye Needles Binder The needles are made of carbon steel, which is robust and can provide a long service, bone murder paper. Creaser and rulColourHide Colourhide A4 PE Binder, 2D Ring 25 mm, Black This A4 binder can hold up to 200 sheets of paperAlipis A6 Monthly Planner Inserts 6 Ring: Gradient Monthly Calendar Refills for A6 Binder - 14 Sheets Undated Weekly Plan Pages PERFECT A6 FIT: These A6 planner inserts are specifically designed for standard 6 ring planner refills, measuring 17.2x9heyous heyous 2pcs A5 Notebook 6-Hole Ring Binder Mechanisms 3cm Diameter Silver Color Metal Clip Ring Binder DIY Fill Paper St Made of high-quality metal, strong and durable.21% Off TEHAUX TEHAUX 4 Ring Binder Cover, A4 Size PU Leather Document Folder - Fabric Textured Loose Leaf Notebook Shell Organizer for Materials: The binder a4 made of PU materials ensure its popularity and durability,elegant look suitable for work, eventTOKIDNY TOKIDNY 100Pcs A4 30-Hole Binder Inner Page Protectors Plastic Document Filing Bags Folder Accessories Sheet Protectors Pocket page protector:they can preserve them from the wear and tear, frequently daily use at home, school, or office,pagTopHomer Plastic Clips, Letters Paper Files Binder Clip, 58mm, Office School Kithen Storage Accessories, Strong Spring, Pack of 1 Size: 5.8cm*2.8cm Rectangle clips, non-slip and firm grip.WRITWAA WRITWAA Metal Bulldog Clips 100mm Pink 3pcs Document Paper Clamp Binder Clips for Office Desk Accessories and File Organ Easy access: the design of the bull clips allows for easy attachment and removal, providing easy access to the items youNoger Acrylic Desktop Stapler with 1000 26/6 Staples, 6 Binder Clips & 50 Paper Clips, Desk Accessory Kit for Home Office Scho 【Material】The stapler is made of clear acrylic with non-skid base, smooth polished edge construction. Quality is better19% Off MARBIG(R) Marbig Zipper Binder with Tech Case 2D Ring, Orange Zipper function for added document protection and moisture resistanceKOKUYO Kokuyo Campus Loose Leaf Binder, A4, 2 Holes, Up to 100 Sheets, Pink, Japan Import (RU-PP158P) A 2 holes binder notebook holds loose leaf papers and handouts in one book.Generic Generic 100Pcs A4 30-Hole Plastic Binder Pockets Loose Leaf Document Filing Bags Protective Sleeve for Ring Binders Offi Clear binder loose leaf pouch:30 pouched hole makes it suitable for most ring binder non-static design, easy insertion,pDUOYUZHIYU 4Pcs Butterfly Metal Paper Clip Book Clips Binder Clips Vintage Bullet Junk Journal Clips Notebook Accessories Decorativ 🦋Material: These paper clips are made of metal, not easy to rust, not easy to fade, not easy to break, and can be usedJOINPAYA JOINPAYA 6-Ring PP Binder Cover A4 File Folder, Portable Loose Leaf Document Organizer with White Shell, Horizontal Scra Loose leaf binder:it is easy to use, press both ends to open the loose-leaf ring, and twisting both sides of the loose-lLurrose Lurrose 6pcs Spiral Binding Rings for Notebooks, DIY Loose Leaf Binder Coils, Multi-color Business and School Notepad Bi Loose leaf book rings--you can use these binder rings to bind loose-leaf paper quickly and neatly without wasting time,SGeneric A6 Binder Inserts - A6 Binder Clear Refill Card Sleeves,Smooth Envelopes for Cash Organizer Credit Business Card Picture Multiple Occasions: Designed to match a6 6-ring binder specifications, the A6 Binder Inserts provide reliable compatibilNatSumeBasics NatSumeBasics Clear A6 Binder Cover Rose Gold 6 Rings 5.5"x7.5" Budget Binders Folders Refillable Soft Notebook Shell Pr 【APPEARANCE】 -- The rose gold A6 Binder have 6 hole fixture design, shell soft and transparent, rose gold round rings, theyous heyous 2pcs A5 Notebook 6-Hole Ring Binder Mechanisms 3cm Diameter Gold Color Metal Clip Ring Binder DIY Fill Paper Stor There are 2 gold A5 metal binders and 8 matching screws in the package.Koqye Plastic A7 Dividers Transparent Sturdy A7 6-Ring Binder Dividers with Tabs Personal Planner Inserts Tab Dividers for Bin 6 holes pocket ring dividers, made of sturdy plastic, reusable, sturdy and tear resistant for a long time using.AVERY Avery Copier Tab Binder Dividers, 5 White Tabs, Unpunched, 30 Sets (20405) Copier file dividers are especially designed for use with certain Xerox high-speed copiers and offset pressesHontaog Metal Paper Clip Holder Bowl, Golden Storage Tray for Paperclips, Stainless Steel Binder Organizer Container, Desktop De 【Sleek & Contemporary Design】Featuring a refined gold stainless steel finish, this paper clip holder showcases a minimalJOINPAYA JOINPAYA 6-Ring PP Binder Cover A4 File Folder, Portable Loose Leaf Document Organizer with White Shell, Horizontal Scra Loose leaf binder:it is easy to use, press both ends to open the loose-leaf ring, and twisting both sides of the loose-lgisgfim 1 Set 8-Tab Discbound Tab Divider with Pockets Letter Size Disc Planner Pocket 8.5 x 11 Plastic Binder Dividers with Tab Package includes: You’ll get 1 set of 8-tab discbound tab dividers with pockets. Upgrade your organization with our premuxcell uxcell A5 Felt Binder, 6 Ring Soft Cover Refillable Notebook Binder with Pocket for Filler Paper Budget Journal Diary Ac Specification: Size: 23 x 18.5 cm / 9.1 x 7.3 Inch (L*W); Fit Paper Size: A5; Material: Felt; Cover Color: Red; PackingLALAFINA LALAFINA A4 Document File Folder Binder with Clip 2 Ring Loose-Leaf Punched Hole Organizer for School Office and Home Mu Secure Document Storage: Featuring a high-elasticity clip, this multifunctional loose-leaf binder firmly holds A4 papersFokmuaex Fokmuaex 6-Hole Waterproof Binder Cover Protector, Soft PU Leather A5/A6 Universal Notebook Cover for Meeting Journal Or Clear PVC Clarity: Featuring transparent PVC material and a 6-hole design, this binder ensures effortless visibility of28% Off MARBIG(R) MARBIG(R) Zipper Binder with Handle, 3O Ring 25 mm, Red Attached handle so you can carry on the goMARBIG(R) MARBIG(R) Zipper Binder with Storage 2O Ring 25 mm, Green Perfect way to file on the go and come in a variety of coloursMARBIG(R) MARBIG(R) Zipper Binder with Handle, 3O Ring 25 mm, Green Attached handle so you can carry on the goCHICIRIS CHICIRIS Punching Tool Durable Paper Binding Machine for A4 A5 A6 A7 Coil Book Home School, Light Blue Portable Spiral B [WIDELY USED] Suitable for binding various sizes of paper, from A4 to A7Mind Reader Mind Reader Desktop Accessory Storage, Paper Binder Clip Basket, Workspace, Office, Metal Mesh, 4.75" L x 5" W x 8" H, P Space-Saving Design: The multi-section, pull-out drawer design maximizes desk or dresser space, allowing you to convenieSOLUSTRE SOLUSTRE 5pcs Plastic Binding Spirals for Spiral Notebook Coils, Detachable Comb Bindings Compatible A4 B5 A5 Loose Leaf Spine:it can be opened and closed directly by hand, which is convenient and simple to use,plastic comb binding spinesPerformore Performore 3 Pack of A5 Notebook Mechanism Replacement Kit, 20mm 6-Ring Metal Binder Mechanisms for Loose Leaf Notebook 👍 GREAT VALUE - 3 sets of ring mechanisms with fastener sets (Nickel finish) are designed for an A5 page size (8 1/4").Performore Performore 3 Pack of A5 Notebook Mechanism Replacement Kit, 20mm 6-Ring Metal Binder Mechanisms for Loose Leaf Notebook 👍 GREAT VALUE - 3 sets of ring mechanisms with fastener sets (Nickel finish) are designed for an A5 page size (8 1/4").Luxshiny Luxshiny 22pcs White 28mm Plastic Circle Binding Discs for Loose-leaf Notebooks, Notebook Binding Supplies for Office an Discs:well polished and smooth surface, will not hurt or scratch your hands these discbound discs are flexible and conve