Metabo has delivered with the WR16SEM brushless 1/2" square drive impact wrench! Thanks to the brushless motor technology you can run on AC/DC power and will get much longer life from the motor with less maintenance. The WR16SEM is great for many types of fastening and loosening jobs such as removing large nuts and bolts, electrical and plumbing installation, building construction, automotive maintenance and agricultural machinery maintenance to name a few. The powerful 370W brushless motor provides up tto 1,900 IPM and 1,600 no-load RPM.