General description A keyless single hand-tightened three jaw chuck designed for drills with a 1/2" shaft. This chuck is ideal for use with impact drills 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 compatibility: Up to 750 watts Bit size compatibility: 1.5mm - 13mm