makita xdt19z 18v lxt lithium-ion brushless cordless quick-shift mode 4-speed impact driver, tool only

Quick-Shift Mode uses the brushless motors electronic controls to find the best balance of speed and torque for each application for more efficient fastening | Makita-built brushless motor delivers 3,600 Max RPM and 1,590 in.lbs. of 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 for a wide range of applications | Additional one-touch 4-speed power selector button under the chuck for added convenience | Assist Mode (A-mode) feature helps eliminate “screw cam-out” and “cross threading” by driving at low speed until tightening begins