The Milwaukee 6509-20 is a reciprocating saw that uses standard 1/2" shank Sawzall blades making it one of the most durable reciprocating saws in its class. The saw features an 11-amp motor with 0-2800 SPM variable speed trigger and a 3/4" stroke length. It is double insulated with a rubber boot for better grip and a center pivot adjustable shoe for longer blade life and better cut control. The 6509-20 features Milwaukee's Quik-Lok blade clamp technology for quick and easy blade changes and the blades can even be clamped upside down for special projects. It also has a double bearing wobble plate mechanism for less vibration and a heavy duty 8 ft. cord. The saw comes with a 5 year limited warranty.