Klein Tools has designed a set of Impact Power Bits for the professional electrician. All the bits are made of high-impact rated S2 steel and color coded for easy identification. The 1-1/4 in (31.8 mm)long driver bits are easier to grip than a standard 1 in (25.4 mm) bit. You can find these bits along with additional size and tip bits in our Pro Impact Power Bit Set with Case (Cat. No. 32799).