For optimal stapling performance in select Swingline staplers, these high capacity staples have a longer leg length than standard staples. High capacity staples can securely fasten larger stacks of paper. Stronger wire for easier paper penetration and reduced jamming. Longer 0.38" staple leg length. 125 staples per strip. Use with Optima 60 and 70 sheet staplers. 2,500 staples per box.