The Milwaukee M18 FUEL 9 in. Cut Off Saw with ONE-KEY is an extremely versatile solution for cutting a large variety of materials. The M18 FUEL Cut Off Saw runs on Milwaukee's M18 REDLITHIUM batteries instead of using gas like most traditional cut off saws. This saw delivers the Power To Cut Reinforced Concrete as well as a large variety of other metal and masonry materials. It delivers this performance while still being Up To 50% Lighter Than Gas saws that dominate the market today. By utilizing Milwaukee's M18 REDLITHIUM HIGH OUTPUT HD12.0 Battery, this saw delivers No Gas Headaches.