Proto® J4990-4M Standard Length Socket Driver Bit, Metric, 3/8 in, 4 mm, 41.3 mm L Bit

PRO49904M MFG #: J4990-4M
$11.99 / EACH
  • Bit Length: 41.3 mm
  • Bit Size: 4 mm
  • Bit Type: Hex
  • Drive Size: 3/8 in
  • Finish: Polished Chrome
  • Material: Alloy Steel
  • Measurement System: Metric
  • Overall Length: 2-23/32 in
  • Type: Standard Length
Proto® Socket Driver Bit, Standard Length, Measurement System: Metric, 3/8 in Drive, Hex Bit, 4 mm Bit, 41.3 mm Bit Length, 2-23/32 in Overall Length, Alloy Steel, Polished Chrome
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  • Item Features
  • Made using a heat treated alloy for wear resistance which helps minimize distortion for a long life
  • Hex opening holds the bit allowing the bit holder to take the torque load
  • 2-piece design allows replacement of worn bits
  • 1404MRKA replacement shaft