The Leatherman Bit Kit contains 21 two-sided bits. You can add the versatility of an extra 42 different tools to any of the Leatherman multi tools that feature a bit driver. The bits from the Kit are therefore compatible with the Charge, Wave, Skeletool, Signal, Surge and MUT models or with a Removable Bit Driver (available separately). The bits are engineered and manufactured to Leatherman's exacting standards. Made from S2 Tool Steel with a zinc coating, they are 35% stronger and even more corrosion resistant than stainless steel. Bits included:Hex 1.5mm and 2mmHex 2.5mm and 3mmHex 4mm and 5mmHex 6mm and 1/4"Hex 7/32" and 3/16"Hex 5/32" and 9/64"Hex 1/8" and 7/64"Hex 3/32" and 5/64"Hex 1/16" and .050"Square Drive #1 and #2Torx #6 and #8Pozi #2 and #1Torx #10 and #15Torx #20 and #25Torx #27 and #30Phillips #0 and #3Phillips #1 and #2Screwdriver 3/32" and 1/8"Screwdriver 5/32" and 3/16"Screwdriver 7/32" and 1/4"Phillips and Flat Tip Eyeglasses Screwdriver