Milwaukee 2520-20 - M12 FUEL™ HACKZALL® Recip Saw (Bare Tool)The M12 FUEL HACKZALL is the fastest cutting and most powerful saw in its class, delivering over 4X more run time, up to 70% faster cutting, and up to 6X longer tool life than competitive saws. Features One handed design provides superior control & versatility over a standard reciprocating saw Compact size allows for cutting in tight spaces, and light weight makes overhead work easier POWERSTATE Brushless motor supplies constant power for faster cuts