The Bosch 26618-01 18 V 1/4 In. Hex Impact Drill/Driver is an adaptable tool that combines a drill mode for high-speed and high-torque drilling with an impact mode for outstanding fastening power to tackle the hardest jobs. In the impact mode, it uses Bosch's hammer and anvil mechanism to deliver up to 1,500 In.-Lbs. of screw-driving torque, 3,200 BPM and 2,800 no-load RPM. This efficient motor will drive up to 150 3 In. lag bolts between charges. In drill mode, it offers two drill settings – high torque (0-750 RPM) and high speed (0-2,800 RPM). The tool also delivers a Quick Change Chuck, Electronic Cell Protection and the best runtime in class, thanks to the 18 V FatPack batteries.