The Bosch DH507 SDS-max� Demolition Hammer weighs only 12.4 lbs., making it an ideal hammer for hard-to-reach applications. This 10.0-AMP tool that gets the job done, delivering 5.6 ft.-lbs. of impact energy and a max of 2,800 BPM. It has Vario-Lock� positioning, which allows for rotating and locking the chisel with precision The SDS-max� chuck system provides tool-free bit changes. And the demo hammer has a 360� rotating auxiliary handle for better grip positioning, and an ergonomic grip area, for better comfort when chiseling in a wide variety of positions.