Bosch Power Tools deliver stronger performance and lasting reliability. Whether smoothing floor pavement, removing graffiti, weather worn paint, or cleaning concrete surfaces before protective paint finishes are applied, the Bosch 1773AK 5 In. concrete surfacing grinder will get the job done right, and safely, the first time. It's perfectly suited for the building trades, especially for refurbishing and deA-burring exposed concrete. It's also ideal for removing irregularities, form work seams and protrusions. Constant Response™ circuitry provides soft-start, maintains constant speed under load, provides overload protection.