At 6 lbs, the Bosch No. GP712VS Variable Speed Polisher is easy to maneuver for extended periods of time. The tool's 12-amp motor offers up to 20 percent more power than the competition, giving it the best power-to-weight ratio in its class. The variable speed dial allows users to match their work speed to the application they're working on. Speeds range from 750 to 3,000 rpm. A separate on/off trigger switch - unique to Bosch - allows for more versatility than the traditional lock-on button next to the trigger.