The Bosch GBH2-28L 1 1/8". SDS-plus® Bulldog(TM) 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. A tool that upholds the tradition in the line of legendary Bosch Bulldog hammers, the GBH2-28L combines user comfort with versatile drilling and hammering functions. It 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.