Power Bit, Application - Tools Impact, Fastening Tool Tip Size T20, T25, Hex Shank Size 1/4 in, Overall Bit Length 2 3/8 in, Bit Style Torx(R), Shank Style Hex, Fastening Tool Material S2 Steel, Single End/Double End Single End, Includes Power Grooves, Shock Absorber, Tee Star, Twinbit, SAE or Metric SAE, Impact Rated Yes, Finish Unfinished, Power Bit