Models DTW1001/ DTW1002/ are high torque cordless impact wrenches powered by 18V Li-ion battery. * Nut busting torque: this machine can loosen a bolt tightened to a torque of 1,600 Nm. Note that the 1,600 Nm does not mean the actual tightening torque of DTW1002 in reverse rotation mode. Features include: Extra-high max tightening torque. Brushless motor. Electric brake. Variable speed control by trigger. Forward/reverse rotation. Twin LED job light. Electronic 3-stage impact power selection (Hard/Medium/Soft). Compact and lightweight design. Ergonomic soft grip.