High precision, locking screws accurately, making no damage to the screw.
With strong magnetic, sucking the screws easily when used it.
Made of high quality S2 alloy steel, higher hardness and long service life.
1/4-Inch hex shank widely used on electric screwdrivers, hand screwdrivers, electric drills, air drills, etc. If any problem, please feel free to contact us.