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 the previous model. The compact, one-handed design provides superior control and the ability to make cuts in tight spaces. Its’ light weight design is optimal for overhead cutting applications. The POWERSTATE™ Brushless Motor outperforms all leading competitors with constant power output, yet runs cooler with no wearable components. REDLINK PLUS™ Intelligence ensures optimized performance and protects your investment from overload, overheating, and over-discharge. The M12™ REDLITHIUM™ 4.0Ah Battery Pack provides more work per charge and more work over the life of the pack. The dual gear counter balance mechanism significantly reduces vibration, providing faster starts in metal and reduced user fatigue.