The Milwaukee® M12? FUEL? Hackzall® is a fast and powerful reciprocating saw saw, delivering over 4X more run time, up to 70% faster cutting and up to 6X longer tool life than competitive saws. The compact, one-handed design provides superior control and the ability to make cuts in tight spaces. Its lightweight design is optimal for overhead cutting applications. The PowerState? brushless motor outperforms competitors with constant power output, yet runs cooler with no wearable components. Redlink Plus? Intelligence ensures optimized performance and protects your tool from overload, overheating and over-discharge. The M12 Redlithium? XC 4.0 battery pack provides more work per charge and more work over the life of the pack than competitive batteries. The dual gear counterbalance mechanism significantly reduces vibration, providing faster starts in metal and reduced user fatigue. SAVE MONEY by replacing or adding specific tools that work with the M12 RedLithium? Lithium-Ion battery and charger you already own. The Milwaukee M12 bare tool system lets you choose the tool you need to get the job done -- without buying a complete kit. Add a Milwaukee bare tool to your M12 cordless system today. Tool only; battery and charger One-handed design provides superior control and versatility over a standard reciprocating saw Compact size allows user to make cuts in tight spaces Light weight makes overhead work easier PowerState brushless motor supplies constant power for faster cuts and reduced heat for extended life Redlink Plus Intelligence provides optimized performance and overload protection using total system communication between tool, battery and charger M12 Redlithium XC 4.0 battery pack (not included) provides superior pack construction, more work per charge and more work over the life of the pack than competitive batteries Model Number: 2520-20. Age Group: adult.