For a heavy duty tool that's well design and can take on a multitude of applications, opt for the 18V LXT Lithium-Ion Cordless 1/2" High Torque Impact Wrench (Tool Only) (XWT04Z) from Makita. Its brushless motor delivers 325 ft.-lbs. of maximum torque, with 1,600 RPM and 2,200 IPM for superior fastening power. Its shock absorbent handle protects the battery housing for extra durability, while the rubberized soft grip handle offers increased comfort on the job. Plus, it's equipped with Star Protection Computer Controls to protect against overloading, over-discharging and over-heating.