Milwaukee 12A Sawzall 1 1/8" Stroke W/ Case, 6519-31. The 6519-31 Sawzall® Recip Saw delivers best in class cut speed, durability and power with 0-3,000 strokes per minute, a 1-1/8" 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. Powerful12 Amp Motor: Delivers 0-3,000 SPM for high performance cutting in a variety of materials. 1-1/8" Stroke Length: Provides maximum cutting speed. Gear Protecting Clutch: Extends gear and motor life by absorbing high impact forces caused by blade lock-ups. Counter Weighted Mechanism: Provides reduced vibration for smoother operation. QUIK-LOK Blade Clamp: Provides fast, tool-free blade changes.