The 6509-31 Sawzall® reciprocating saw delivers finest in class cut speed, durability and power with 0 to 3000 spm, a 3/4 in stroke length and a 12 A 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 finest in class ergonomics.