0 - 3000 strokes per minute, a 1-1/8" stroke length, and a 12A motor. The gear protecting clutch extends gear and motor life by absorbing high-impact forces and a Quik-Lok blade clamp offers fast, tool-free blade changes. To provide greater user comfort, a counter-weighted mechanism reduces vibration for smoother operation and a redesigned front grip area provides best in class ergonomics.