The Bosch IWMH182-01 18V EC Brushless 1/2 In. Impact Wrench Kit with Ball Detent features a tool that is engineered for pros who spend a great deal of time fastening high-torque nuts and anchors. The IWMH182 has a spring-loaded hammer-and-anvil system for great impact endurance. The efficient EC Brushless motor features a long runtime and delivers up to 185 Ft.-Lbs. (2,200 In.-Lbs.) of torque, 0-3,400 bpm and 0-2,400 no-load rpm. It has a short 6.4 In. head-length and a weight of just 3.6 Lbs., offering maneuverability in tight spaces and extended comfort. It has Electronic Motor and Cell Protection to prevent overheating and overloading. It provides soft-grip wrapped housing, a slim-grip handle, a belt clip for easy tool storage while on the job and a concentrated LED layout. The kit includes two 18V 4.0 Ah FatPack batteries and a battery charger, for all-day work.