13 pc inch .050", 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16" and 3/8". Up to 20% stronger than competition, longer wear, tighter screws, dry, corrosion resistant finish, 5x more resistant to rust or corrosion than plated finishes, provides better tool grip, precise fit in screw head, sharp corners eliminates stripping, chamfered tool tips. Bondhus 12137 HLX13