Originally patented in 1932, Bostitch B8 PowerCrown staples staple up to 50% more sheets than standard staples. The unique PowerCrown design forces the staple legs outward during the drive, increasing staple strength & reducing effort. The longer length provides up to 50% more sheet capacity making it the ideal staple for use in office environments. These staples are made from the finest quality wire & feature finely honed chisel points for maximum penetration. Staple Collation: Full-Strip; Staples per Strip / Cartridge: 210; Sheet Capacity: 45; Leg Length: 0.38".