he 40V max XGT® Brushless Cordless 4-Speed Mid-Torque 1/2" Sq. Drive Impact Wrench with Friction Ring Anvil (GWT07Z, tool only) provides improved fastening control, ideal for automotive, installation, and fabrication trades. The impact wrench combines extended run time and speed control for unmatched fastening performance. The GWT07Z is powered by a Makita-built motor for longer run time. The brushless motor delivers 560 ft.lbs. of Fastening Torque and 810 ft.lbs. of Nut-Busting Torque. The electronically controlled brushless motor efficiently uses energy to match torque and RPM to the changing demands of the application.