Ski spreaders increase stability and control on snowmobiles. Heavy-duty 1/4 steel body is stepped and offset for the correct results and long-lasting wear. They are offset 3-1/2 and holes are on 3 centers. Holes can be slotted to fit other snowmobiles. Includes 2 spreader plates, 8 3/8 x1-3/4 bolts and 8 3/8 lock nuts.