The Bosch CSG15 5 in concrete surfacing grinder has a dedicated dust-collection shroud for a cleaner work environment, as well as plenty of power. It delivers 12.5 A and up to 9300 rpm, for concrete grading, surface preparation and other tough concrete applications. Its dedicated dust guard system is a comprehensive solution for collecting dust that allows grinding flush against walls. The system helps to provide a longer operational life, including a sealed motor and a sealed switch. It also has double-sealed ball bearings and two lip-sealing rings to protect against dust contamination. With Constant Response circuitry, this grinder's motor can handle extended operational load, which allows the user to reach areas where walk-behind unit can't touch. Its spindle lock allows for quick wheel changes, it has a wrap-around auxiliary handle and it includes service Minder brushes.