The Milwaukee 2719-21 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 compact, one-handed design provides superior control and the ability to make cuts in tight spaces. The dual gear counterbalance mechanism provides up to 4x lower vibration than traditional reciprocating saws, resulting in faster cut-starts in metal and reduced user fatigue. REDLINK PLUS Intelligence ensures optimized performance and protects your investment from overload, overheating, and over-discharge. The M18 REDLITHIUM XC5.0 Battery Pack provides more work per charge and more work over the life of the pack than competitive batteries. A rubber seal and weep holes provide superior protection against water and debris. Features Cuts up to 50% faster than competitive one-handed reciprocating saws Up to 4x lower vibration for smooth cut starts & one-handed control Compact and lightweight design allows for easier cutting in tight spaces or overhead applications POWERSTATE Brushless Motor: Increased cutting speed and power through the toughest applications REDLINK Plus Intelligence: The most advanced system of cordless power tool electronics; provides optimized performance and overload protection using total system communication between tool, battery and charger REDLITHIUM battery technology: Superior pack construction, electronics and performance deliver more work per charge and more work over pack life than any battery on the market One-handed design provides superior control and versatility over standard reciprocating saws 7/8" stroke length removes more material with each stroke resulting in the faster cuts Pivoting shoe provides constant contact with the work-piece resulting in smoother cuts with less bucking and vibration REDLINK PLUS intelligence and POWERSTATE Brushless Motor combine to provide up to 3x longer tool life than competitive one-handed reciprocators M18 REDLITHIUM Battery packs, compatible with 125+ solutions Specifications Saw Branding: HACKZALL®Power Source: CordlessLength: 14"Weight: 4.07 lbsHeight: 7"Width: 3.31"Compatible Batteries: 48-11-1815; 48-11-1820; 48-11-1828; 48-11-1840; 48-11-1850; 48-11-1860; 48-11-1890Compatible Chargers: 2710-20; 48-59-1812; 48-59-1808; 48-59-1807;Battery System: M18 Includes:(1) M18 FUEL Hackzall®(2719-20)