1/2-20UNF Mount 1.5-13mm Capacity Key Drill Chuck for Air Impact Wrench Converter Conversion Tool with Chuck Key and 1/2 inch Socket Square Female

Made of premium chrome vanadium steel, strong and durable in use Mount: 1/2-20UNF, Capacity range:1.5-13mm, use on impact drills and electric power

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Mesee 1.5-13mm Capacity Quick Change Drill Chuck Adapter Converter