General description A keyless hand-tightened three jaw chuck designed for drills with a 1/2" shaft. This chuck is ideal for impact drills with a power rating of up to 750 watts and accommodates drill bits ranging from 1.5mm to 13mm. Technical specifications Chuck type: Keyless Jaw type: Three jaw Shaft size: 1/2" Power rating: Up to 750 watts Compatible drill bit sizes: 1.5mm - 13mm