Proto® J4770-4M Metric Standard Length Socket Bit, 4 mm Bit, 1/4 in Square Drive, 1 in Bit Length
Item #BC398319

Proto® Socket Bit, Standard Length, Measurement System Metric, 1/4 in Drive, Square Drive, 4 mm Bit, Hex Bit, 1 in Bit Length, 1-7/8 in Overall Length, 6 Points, Forged Alloy Steel, Full Polished Chrome
  • Bit holders have a hex opening to hold the bit allowing the bit holder to take the full load of torque
  • Two-piece design allows replacement of worn bits
Bit Length1 in
Bit Size4 mm
Bit TypeHex
Drive Size1/4 in
Drive TypeSquare
FinishFull Polished Chrome
MaterialForged Alloy Steel
Measurement SystemMetric
Number of Points6
Overall Length1-7/8 in
TypeStandard Length
WarrantyLifetime