Power Bit, Application - Tools Power, Bit Style Hex, Fastening Tool Tip Size 4 mm, Shank Style Hex, Hex Shank Size 1/4 in, Single End, Fastening Tool Material Stainless Steel, Overall Bit Length 3 1/2 in, Metric, Finish Diamond Coated, Impact Rated No, For Use With 1/4 in Adaptors, Power Bit