Milwaukee M18 2821-20 FUEL Gen-2 18V Lithium-Ion Brushless Cordless Sawzall Reciprocating Saw (Tool-Only)About This Product The Milwaukee M18 FUEL SAWZALL Recip Saw is the next generation of legendary performance and durability, designed for the toughest applications on the job site. The M18 FUEL SAWZALL is the fastest cutting reciprocating saw in its class and leverages a POWERSTATE Brushless Motor to provide users with 3,000 SPM with a 1 1 4 in. stroke length for faster material removal. REDLINK PLUS electronics ensure maximum performance under stress