Fellowes® Wire Bindings, 1/2" Diameter, 100 Sheet Capacity, Black, 25/Pack (FEL5255401) Pack of 25Fellowes Wire Bindings Create a professional look for bound reports and presentations. Made with durable, double loop wire binding combs for exceptional durability. Secure closure permanently binds documents. Use with any wire binding system with a 3: 1 punching pitch and 32 hole pattern. Global Product Type: Wire Binding Spines Sheet Capacity: 100 Spine Diameter: 1 2" Number of Rings: 32 Color(s): Black Material(s): Wire For Use With: Most wire