Concrete polisher: 1. High quality, competitive price. 2. Safety guard., Easy exchangeable brush. 3. Dia: 3", 4", 5". 1. Speed can be control.2. Thread: M10, M12, M14, 5/8-113. Multi positions handle 4. Safety guard 5. Easy exchangeable brush6. High Quality and Competitive Price 7. Disc dia:80mm, 100mm, 125mm8. Accessories: A grinding wheel cover, a spanner, a handle PRODUCTPOWERRATE ...