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Those Screwdriver Bits are made of S2 alloy steel which is anti-impact and tough, great wear resistant
Strong magnetic, good workmanship, high precision. each edge can be accurately locked screws, no damage to the screw and the screwdriver head
With 1/4 inch hex shaft, they are widely used on electric screwdrivers, hand screwdrivers, cordless drills, etc
There are different type screwdriver bit heads ,such as: Slotted head, cross head, which convenient to you, can meet your varied requirements
Fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth