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 and 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 and feature finely honed chisel points for maximum penetration. 0.37- leg length. 45 sheet capacity. This staple fits into the B8 staplers. Each case comes with 20 boxes of 5,000 staples (100,000 staples total).