Keyless Drill Chuck Metal Heavy Duty 1/2-20 UNF Threaded 2-13mm Capacity Tool
1/2-20 UNF Thread | 2–13mm Capacity | Professional Tool. Universal Compatibility – 1/2-20 UNF threaded fit. Thread Type 1/2-20 UNF. This heavy-duty keyless drill chuck is designed for secure and precise bit holding.