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 inch stroke length, cuts up to 50% faster than competitors. The compact, 1-handed design provides superior control and the ability to make cuts in tight spaces. The dual gear counter balance mechanism provides the lowest in-cut vibration of any reciprocating saw, 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. A rubber seal and weep holes provide superior protection against water and debris.