10 mm drill chuck with key
10MM Drill Chuck Mini electric grinder drill clip. Precise thread chuck so that it can closely connect to the tool. Shell, key and keyhole have been quenched. Shell gear and key gear were forming by cold press. Chuck, jaws and teeth gnawing mobile flexibly, non-blocking. Jaws has been treated by special craft, with strong wear-resistance. Precise and reliable accuracy, very durable.