【Widely Applicable】These practical spiral coil binders are spaced approximately 10mm apart, suitable for most binding machines, compatible with 10-hole punches, 20-hole punches, and 30-hole punches. Great Value Set]10pcs binding combs, rich in 10 different colors, sufficient quantity perfect for daily binding notes, documents, reports, etc., providing you with convenience and professionalism. [Premium Material]These comb binding spines are made of high-quality plastic material, soft and tough, flexible to bend, easy to open and close, durable and reusable, can serve you for a... If you have any questions or dissatisfaction with the product, please feel free to contact us and we will provide you with the best solution. Fellowes 14mm Plastic Binding Coils 21 Ring Black Pack 100 Document Binding Supplies 10 Pcs Binding Combs 30 Rings Comb Binding Spines Coil Binding Machine Plastic Spiral Book Binder For Teacher Student Document Notebook File Making, Black White, 3/8 Inch 3/8 Inch Binding Coils 【30 Hole Length】These binding coils have 30 hole posts, the total length is 28cm / 11inch, you can cut the length according to your needs, it can achieve 30 holes/A4, 26 holes/B5, 20 holes/A5., 【3/8 Inch Diameter】Each spiral binding coil has approximately 10mm/3/8 diameter thickness and can support a maximum capacity of 65 sheets of filler paper, plenty of space for your binding needs. Great Value Set10pcs binding combs, classic black and white, sufficient quantity perfect for daily binding notes, documents, reports, etc., providing you with convenience and professionalism 【Premium Material】These comb binding spines are made of high-quality plastic material, soft and tough, flexible to bend, easy to open and close, durable and reusable, can serve you for a long time. SpecificationProduct name: 30 holes binding combsMaterial: plasticSize: see picturePackaging: bagged Packing List10pcs comb binding spines (black white, 3/8 inch)