Proto J7440R8MM Socket Bit Set 1 4 in Drive Size, 10 Pieces, 1.5 mm to 7 mm Range of Tip Sizes, Metric G4700662 221 Degrees F Maximum Operating 221 Degrees F Maximum Operating Temperature 221 Degrees F Insulation Material Thermoplastic Polyester Minimum Wire Combination (2) 14 AWG UL 94 Flammability Rating V 2 Special Features Excellent for Fine Stranded Wire Applications Housing Material Skinsulate This Proto J7440R8MM Socket Bit Set includes 10 pieces in a 1 4 in drive size with a range of tip sizes from 1 Finish Chrome Number of Pieces 10 SAE or Metric Metric Includes Not Found Measurement Type Metric Insulated No Tip Type Hex Material Alloy Steel Tether Capable Not Tether Capable Tip Style Hex Features Rounded Bolt Removal Technology (Rbrt) Designed to Prevent the Rounding of Hex Fasteners Sockets Included 1