* 170 Nm of torque * Quick release chuck * 2,800 rpm and 3,500 bpm * Integral LED work-light * The Body only version has no battery or charger The 18V STANLEY FATMAX V20 Brushless Impact Driver features new and improved battery technology, with no memory effect and minimal self-discharge. The V20 Lithium-ion battery pack is ready to go to work whenever you are and wherever the job takes you, with an integral battery state of charge indicator for convenient monitoring of battery charge levels.