Swingline Heavy Duty Staples (S.F.&reg 13), 15/16" Leg, 210 Sheet Capacity, 1000/Box (SWI35320) Swingline's finest heavy duty staples for superior performance. For use in Swingline Heavy-duty and long-reach staplers Superior strength Swingline staple offers dependable stapling with less jamming. Use in Swingline Electric Saddle Stapler (10504) and Saddle Staplers (06155). 15/16" leg length. Sold by the BX