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

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