Industrial Screwdriver Bits, Ø 4 mm Round Shank Screwdriver Bits, D4 Round Shank + Phillips Screwdriver Bit
D4*60*D2.5*20*1# Ø4 wing-type round shank screwdriver bit, length 60mm, stepped down to Ø2.5 length 20, 4-point tip size #1

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D4*40*D2*20*0# 4mm wing-type screwdriver bit, 40mm length, stepped down to 2mm diameter x 20 length, Phillips #0 tip
Used for torque-controlled screwdrivers.
S2 steel material



