Proto J54415 8XL Socket Bit, 1 2 in Drive, Hex Tip, 5 8 in Tip Size, 7 3 16 in Overall Length, Fixed Insert 797NV0 Copper Tube Size Copper Tube Size Hydraulic Oils (Petroleum) Finish Chrome Socket Type Extra Long Hex Bit Category Type Socket Bits SAE or Metric SAE Material Alloy Steel Bit Style Hex Number of Points 6 Drive Type Square Impact Rated No Measurement Type SAE Replaceable Insert No Insulated No Tip Style Hex Replaceable Insert Capable Fixed Insert Includes Insulation Not Insulated Impact Rated Status Not Impact Rated Country of Origin United States Bit holders have a hex opening to hold the bit allowing the bit holder to take the full load of torque