Milwaukee hd18 hiw 402 12in impact wrench is the most powerful 18 volt cordless impact wrench on the market with a 4 pole frameless motor it delivers a staggering 610 nm of torque ideal for powering through the toughest of applications has a 12in square drive with detent pin for secure socket retention and is ideal for heavy applications such as steel fabrication mechanical fastening industrial construction and automotive work has a light weight and ergonomical design and the fuel gauge display