Concrete Floor Grinder Operation Walk-Behind Drive Type Planetary Number of Grinding Discs 3 Grinding Disc Diameter 9 in Grinding Width 20 in Planetary Motion Control Counterclockwise Horsepower 5 1/2 hp Voltage 220 to 240V Accessory Free Tool Change Yes Anti-Restart Technology Yes Anti-Vibration Technology Yes Cord Length 50 ft Current 15 A Electrical Protection Overload Protection Engine Brand Husqvarna