Ideal for centerline binding; staples up to 12" from paper's edge. Staples up to 20 sheets. AntiJam™ stapling channel. Steel. 7" throat depth. Top loads a full strip (210) of 1/4" saddle staples. Manufacturer's one-year warranty. All sheet capacities are based on 20-lb. bond. Stapler Type: N\A; Staple Capacity: 210; Full Strip; Size of Staple Used: 1/4 in; Type of Staple Used: Standard.