Commercial grade stapler provides reliable, high performance stapling day after day. It also has a reversible anvil to create temporary pin staples, and has the ability to open flat for tacking. The metal build is durable with an inner rail to ensure jam resistant stapling of as many as 20 sheets at a time. 100% Performance Guarantee when used with S.F.® 4® Premium Staples. Stapler Type: Full-Size Desktop; Staple Capacity: Full Strip (210 Staples); Size of Staple Used: 1/4″; Type of Staple Used: S.F.® 4® Premium Staples.