The WR18DH is an 18V 1/2" Drive Impact Wrench. The powerful brushless motor provides 433 ft-lbs of loosening torque and 255 ft-lbs of tightening torque. Auto Stop, Auto Slow, IP56, and a compact tool body save time and money by reducing damaged and dropped fasteners, getting into tight places, and working in tough conditions. The WR18DH provides what the professional needs. The 18V 1/2" Drive Impact Wrench is part of the expanding MultiVolt System of 18-Volt and 36-Volt power tools from Metabo HPT. GO compact and lightweight for all applications with 18V batteries or GO extreme with the unique MultiVolt 18V/36V battery to supercharge your runtime for up to 8.0Ah per charge.