The Mac Tools 3/8" Impact Wrenches, Nos. MCF923B and MCF923GP1, deliver strong performance in a compact, job-ready design. With up to 300 ft-lbs of fastening torque and 450 ft-lbs of breakaway torque, it is built to handle demanding applications. Four speed settings and Precision Wrench mode help improve control and reduce overtightening and fastener run-off. Its hog ring anvil allows for quick socket changes, while the glass-filled nylon housing helps resist oil, grease, and solvents. A built-in LED and shorter overall length further enhance visibility and maneuverability.