The MILWAUKEE® M18™ FUEL™ 9" Cut-Off Saw w/ ONE KEY™ is an extremely versatile solution for cutting a large variety of materials. The cordless cut off saw runs on M18™ REDLITHIUM™ batteries instead of gas like traditional cut off saws. The cut off 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 being Up To 50% Lighter Than Gas demo saws on the market today. Using the M18™ REDLITHIUM™ HIGH OUTPUT™ HD12.0 Battery (not included), the saw ensures No Gas Headaches. The concrete cutting saw produces no fumes so it can be used indoors. It also starts up instantly, eliminates the need to mix gas and oil, and there is no gas engine maintenance. The M18 FUEL™ 9" Cut-Off Saw also has ONE-KEY™ integrated to wirelessly connect the tool with a smartphone to track and manage it.