Classic keyed 3-jaw design securely holds a wide range of twist drills and step drill bits with 1/16-1/2 Inch shank
Socket Adapter: 1/2" Square Female, can easily transform power impact wrench to a drill
Constructed from premium chrome vanadium steel for durability and stands up to extensive daily use
Please Note: The chuck can NOT be used counterclockwise!
For use 1/2-inch impact wrench, 3/8-inch chuck allows you to lock and release bits to help keep you on task on the job. Heavy duty design. Special quenching treated key parts increases durability.