Great Value Set10pcs binding combs, rich in 10 different colors, sufficient quantity perfect for daily binding notes, documents, reports, etc., providing you with convenience and professionalism. Premium MaterialThese 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. 30 Hole LengthThese 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. 1/2 Inch DiameterEach spiral binding coil has approximately 12mm/1/2" diameter thickness and can support a maximum capacity of 85 sheets of filler paper, plenty of space for your binding needs. Widely ApplicableThese 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.