Our weighted heavy-duty floor machine provides the friction required to perform many types of stone maintenance and refinishing operations on today?s stone floors. A unique ?donut? weight is mounted underneath the deck of the floor machine for smoother and superior grinding honing polishing and crystallization. A specially designed weight basket is also bolted through the machine's motor and gearbox allowing the operator to adjust machine weight from 140lbs to 230lbs to increase friction without compromising balance. A four gallon solution tank that dispenses liquids is mounted on the handle.