Swingline : Optima Staples, 45 Sheet Capacity, 3750 Per Pack The ultimate in Swingline staple performance for Optima staplers. Enhanced design improves ease of use at all sheet counts. Durable packaging protects staples from damage. Can be used in other standard staples. Global Product Type: Staples-Standard; Staple Cartridge Type: N/A; Staple Type: Standard; For Use With: Optima or other standard staplers.:Manufactured by.: Swingline