14 pc Power Nut Driver 1/4" Shank Quick Change Bit Set. Shank Type: Hex Shank. This set of screwdriver bits shank tools fits most powered corded or cordless drills to drive hex head screws. 7Pcs SAE Sizes : 3/16", 1/4", 9/32", 5/16", 11/32", 3/8", 7/16".
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