Bosch 11255VSR-GWS8 1" SDS-plus Bulldog Xtreme Rotary Hammer with 4-1/2" Small Angle Grinder, Blue 11255VSR  Multi-function selector with 3 modes of operation, rotation only, rotary hammer and hammer-only mode 11255VSR  Vario-Lock positioning rotates and locks chisel into 36 different positions to optimize working angle 1375A  6 amp motor delivers 11,000 rpm 1375A  Service Minder brushes eliminate guesswork, stops the tool when preventative maintenance is required