Max XR Cordless Angle Grinder, 4-1/2-In., 20-Volt Lithium Ion BatteryMax xr, 20v, lithium ion, 4 1 2" cordless brushless paddle switch small angle grinder with kickback brake, tool only, no battery or charger included, brushless motor requires no brush changes, brake stops wheel in 2 seconds or less on average, kickback brake engages when a p", stall, or bind up event is sensed & the electronic brake engages with maximum force to quickly stop the wheel, reduce the movement of the grinder & shut the grinder off, anti