Insert Bit, Application – Tools Hand, Bit Style Hex, Fastening Tool Tip Size #1 to #4, Shank Style Hex Power Drive, Hex Shank Size 1/4 in, Single End, Fastening Tool Material S2 Steel, Overall Bit Length 1 1/4 in, SAE, Finish Unfinished, Impact Rated Impact Rated, For Use With Screws, Insert Bit