Powered by dewalt39s high performance long lasting 18v xr 40ah lithium ion battery technology the dcs373n circular saw with it39s 140mm tungsten carbide blade is easily capable of slicing through a wide range of material including metals and wood quickly and accurately operating at an impressive 3700rpm maximum speed the dcs373n is a high power top quality tool ergonomically designed and extremely versatile thanks to it39s built in led worklight and cordless 39use anywhere3