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