Conduit Reaming Bit Holder, Application - Tools Impact, Drive Size 1/4 in, Bit Holder Drive Type Hex, Hex Shank Size 1/4 in, Shank Style Hex, Overall Bit Length 4 in, Fastening Tool Material Steel, Bit Retainer Type Retaining Ring, Nonmagnetic, Impact Rated Yes, Number of Pieces 5, Includes (4) 1 in Shockwave(TM) Driver Bits PH2, SQ2, ECX2, SL 1/4 in