The Milwaukee 2719-20 M18 FUEL HACKZALL is the fastest cutting and most powerful one-handed reciprocating saw. Utilizing a POWERSTATE Brushless Motor and a best in class 7/8" stroke length, the M18 FUEL HACKZALL cuts up to 50% faster than competitors. The M18 Extended Capacity Battery is designed with superior pack construction, electronics, and performance to optimize work per charge and work over pack life. It offers 3.0 amp-hours of runtime. With built-in Milwaukee durability, this battery runs cooler and performs in climates below 0°F/-18°C. 48-59-1812 M18 & M12 Multi-Voltage Charger accepts all M18 and M12 batteries, so you’ll always be prepared and productive, especially on jobs that require a mix of M12 and M18 Milwaukee cordless power tools.