Key type drill chuck(Heavy Duty).Recommended for light,medium and heavy-duty portable bench or floor mounted power tiils

Features:
1.High precision threaded and tapered tightly mounts on the tools.
2.Sleeve,key hole and key are shaped by quenching.
3.Jaws are specifically engineered for tight tolerance production drilling.
4.Sleeve teeth and key holesare are shaped by cold pressing.
5.Super precision and durable.