Swingline S.F. 13 Heavy-Duty 15/16 inch Leg Staples, 210-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: Swingline 900XD; GBC 224XHD; Bostitch 00540; Leg Length: 15/16"; Sheet Capacity: 210.