IRWIN 3532993C Double-Ended Insert Bit Set, 3-Piece

Industrial quality bits are manufactured to withstand the same high-torque use as Irwin power bits. Hex shank of size 1/4 in. Includes one each of #1PH/6-8 Sl, #2PH/8-10 Sl, #3PH/10-12 Sl.