The Lavina 38GR-S is the brand’s first remote-controlled propane model. The 38-in. forced belt-driven planetary grinder/polisher features three 13.5-in. heads, a heavy-duty 31-hp propane engine, and up to 770 lbs of grinding pressure. A wireless, easy-grip remote control allows hands-free operation up to 300 ft away. Gyroscopic technology enables a straight grinding/polishing path by ignoring uneven floors and disturbances of up to 30 degrees. Superabrasive.