The Bosch GBH2-20D is a top performance model in the compact class. it features: Versatile range of applications due to chisel function Overload clutch to protect the user and the machine Forward/reverse rotation for dislodging jammed drill bits Continuously variable speed control for clean drilling starts Impact stop for drilling in wood and steel High drilling rate and 30% higher chiselling performance than other rotary hammers in the entry-level class Lightweight and compact, ideal for working overhead Robust stacked construction for a long lifetime