The Bosch GBH2-28L 1-1/8 inch SDS-plus Bulldog Xtreme Max Rotary Hammer features a powerful 8.5-amp motor and KickBack Control. This feature is an integrated sensor to stop tool rotation during bit bind-up situations. The GBH2-28L provides counter-balanced Vibration Control for more comfortable handling of the hammer. Ideal for masonry pros or general contractors, this tool weighs only 6.9 lbs. but delivers 2.4 ft.-lbs. of impact energy and 0-5,100 bpm. It has a multifunction mode selector for drilling versatility drilling only, hammer drilling and chiseling. This Bulldog has ideal features for hard-working pros, including a variable-speed reversing trigger for accurate bit starting, Vario-Lock positioning for the optimal chiseling angle, a HammerHook that allows the user to hang the tool on the job and an ergonomic D-handle for user comfort. The SDS-plus system provides for tool-free bit changes.