Vevor Electric Concrete Floor Grinder 7" Walk-Behind 1.7HP 1720 RPM NewVevor's Concrete Floor Grinder is equipped with a 7" grinding disc and works with both wet and dry grinding. The 1. 7 HP pure copper motor provides a powerful 1720 RPM giving you power and control. It can grind various surfaces including concrete, marble, stone, and more. The grinder is equipped with replaceable grinding disc blades, and is compatible with most diamond blades on the market. Designed for comfort during long use, the handle height can