18v, lxt, lithium-ion, brushless, cordless impact driver, tool only, no battery or charger included, quick-shift mode uses brushless motors electronic controls to find the best balance of speed & torque for each application, brushless motor delivers 3,600 max rpm & 1,600 in/lb max torque, 4 speed power selection 0-1,100/ 0-2,100/ 0-3,200/ 0-3,600 rpm & 0-1,100/ 0-2,600/ 0-3,600/ 0-3,800 ipm, provides precise fastening control, assist mode a-mode, feature helps eliminate screw cam-out & cross threading by driving low speed until tightening begins, 2 tightening modes t-mode for faster tightening of self-drilling screws in thick or thin gauge metal helps prevent damage to the screw, reverse rotation auto stop mode stops rotation & impact when fastener is loosened adequately, built-in led lights on both sides helps eliminate shadows & illuminate a larger area.
