... ,engineered stone and other stones. High efficiency and compititive price. Three Heads Planetary Polisher RZ2-0001 Feature:1. For marble, granite ... .5. Use coated abrasives, diamond polishing systems, light weight diamond wheels or brushes to grind, hone, polish or clean concrete, terrazzo ... : 3'' or 4''.8. Recommended Speed: less than 2700rpm/min Three-head planetary polisher