100pc Master Screwdriver Bit Set 100pc Master Screwdriver Bit Set Includes 15 styles of bit tips:6-Phillips, 5-Pozidriv, 5-Square, 13-Torx, 3-Clutch, 10-Hex, 6-Slotted, 4-Acr, 3-Acr/Pozi, 4-Spline, 5-Torq-set, 5-Spanner, 11-Tamper Torx, 10-Tamper Hex, 5-Tri-wing, Socket adapter, 1/4x1" & 1/4x2" bit holders, mag bit holder, y-drive for hook screws