Elastic rubber suction ring with low-wear metal ring glides smoothly over the surface, protecting against dust and ejecting stones. Dust extraction protects against abrasive dust, reduces disc wear, and keeps the concrete pores open for recoating. The soft start feature allows for safe starting without overloading the power supply, and there is a restart lock after a power failure. The suction hood has stepless height adjustment, and the suction nozzle has a 32 mm outer diameter. The spindle lock is included, making it very well suited for large-area removal. Optimal guidance is provided through the rear handle grip, along with a steplessly adjustable, vibration-damped, ergonomic bow handle for optimal handling and machine guidance.