Toothed chuck for hand drills, three-jaw chuck for holding drills - tools 1.5 - 13mm, clamping thread 1/2 - 20 UNF, a handle (wrench) is used to hold the tool, by turning and shifting the teeth it tightens or loosens the grip of the jaws, (can be combined with adapter 20745 for attaching the chuck to machines with a head with SDS + clamping), packaging: paper box with euro hole.