New arrival cheapest sds plus adaptor screw driver bits Holder

• Size:  1/2" 20 UNF or Customized
• Material:40CR
• SDS adapter increases the usefulness of your rotary hammer.
• Allows you to use straight shank twist bits in a "drill only" mode. 
• Chuck is made completely of metal in a three-jawed design. 
• Application: drill chuck, hollow electric hammer drill professional connection tool, has a stronger connection performance.

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