DRILL ALL STEEL CHUCK & SDS Adaptor 10MM 3/8x24 UNF. :3/8" x 24 UNF Female Mount + SDS Adaptor. with a hole in the rear for counterclockwise screw to lock it in the SDS adaptor shaft. hardened steel, anti-thrust bearing,3 heat-treated jaws,solid steel precision & durable keyed drill chuck.
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