Wire Bindings, 3-8" Diameter, 80 Sheet Capacity, Black, 25-packCreate 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. Sheet Capacity: 80; Spine Diameter: 0. 38"; Number of Rings: 32; Color(s): Black. Package Includes: Includes 25 binding spines.