NSS Thoroughbred Heavy-Duty Floor Machine Super durable and built to be the best, the Thoroughbred is precision-balanced for maximum cleaning efficiency and reduced operator fatigue. Incredibly durable, dependable, and powerful. Rugged, polished cast aluminum motor mount and skirt. Heavy-duty 1 or 1.5 HP motor. 11:1 planetary gear drive. Structural foam pad driver. 17-inch/43-cm or 20-inch/51-cm work path.