T20 Driver Bits Application - Tools Impact Fastening Tool Tip Size T20 Hex Shank Size 1/4 in Overall Bit Length 1 in Bit Style Torx(R) Shank Style Hex Fastening Tool Material Alloy Steel Single End/Double End Single End Includes (5) Insert Bit T20 SAE or Metric SAE Impact Rated Yes Finish Unfinished Insert Bit