Bosch Heavy Duty - Power, Performance and Robustness redefined! For high overload capability and a long service life. Thanks to electronic regulation of speed - even under load. In binding conditions thanks to automatic shut-down of the tool. As the load and torque of the motor are temporarily reduced during start-up. The professional power tools for woodworking from Bosch. - Little servicing required due to significantly improved carbon brushes - Constant Electronic for constant speed, also under heavy load - New clamping system for a secure fit of the grinding stones to ensure precise work - Compact, ergonomic shape for versatile grinding work - Cut-out carbon brushes for a high level of motor protection - Direct cooling for high overload capability and long lifetime - 6-stage speed pres.