The 6509-31 Sawzall Recip Saw delivers best in class cut speed, durability and power with 0-3,000 strokes per minute, a 3/4 stroke length and a 12 Amp 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.FeaturesPowerful12 Amp Motor: Delivers 0-3,000 SPM for high performance cutting in a variety of materials3/4" Stroke Length: Provides maximum cut controlGear Protecting Clutch: Extends gear and motor life by absorbing high impact forces caused by blade lock-upsCounter Weighted Mechanism: Provides reduced vibration for smoother operationQUIK-LOK Blade Clamp: Provides fast , tool-free blade changesSpecifications: Product Type: Reciprocating SawStroke: 3/4"SPM: 0-3000Amperage: 12Warranty: 5 YearsBatteries Included: 0Includes: Carry CasePower Source: Corded