Voltage: 12V

No-load Speed: 0-2500RPM

Impact Rate: 0-3500BPM

Max.torque: 100NM

Chuck: 1/4"hex

A manual impact driver is a tool that delivers a strong, sudden rotational force and forward thrust when struck on the back with a hammer. It is often used by mechanics to loosen larger screws (bolts) and nuts that are corrosively "frozen"