Hex Shank Size: 1/4". 1,3,5,10X 1/4" Hex Magnetic Drill Bits Nut Driver. - The bell-shape and magnetic hex insert allow the bit to hold the bit securely in place for quicker installations. Applicable for installing in those hexagon tools, such as pneumatic screwdriver, electric screwdriver, pneumatic drill, electric drill, pistol drill, manual screwdriver, etc.
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