Swingline S.F. 13 Heavy-Duty 1/2 inch Leg Staples, 90-Sheet Capacity, 1000/BoxFor use with heavy-duty staplers. Premium heavy-duty staples feature precision chisel points for better piercing ability and less jamming. Compatible with high-capacity heavy-duty staplers only. Staple Type: Heavy-Duty; For Use With: Bostitch 00540, B310Hds; Boston 73131; GBC 224XHD, 213HD; Rapid HD170; Swingline 113XD, 900XD, 13-16, 390, 415; Universal 43043; Leg Length: 1/2"; Sheet Capacity: 90.