55PCS Impact Nut Driver Set, Magenetic Nut Driver Set for Impact Drills and Premium Deep Drivers, Wing Nut Setters, 1/4" Quick Change, Bit Extention, S2 Steel Bits, Pivoting Nut Setter. Professional Material: Cr-V steel used to manufacture the impact nut drivers for better durability, achieved a much longer service life for users.
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