Insert Bit Application - Tools Impact Fastening Tool Tip Size #1 Hex Shank Size 1/4 in Overall Bit Length 1 in Bit Style ECX(TM) Shank Style Hex Fastening Tool Material S2 Steel Single End/Double End Single End Includes (25) ECX1 Insert Bits SAE or Metric SAE Impact Rated Yes Finish Black Phosphate Insert Bit Package Quantity 25