MC3011 wheel chocks are for mine haul trucks with tire sizes up to 165 in.
Justrite Transport Cart for MC3011 Wheel Chocks, CT1911 The Checkers™ heavy-duty MC3011 wheel chocks weigh only 32 lbs, making them 24% lighter than the industry standard. They are manufactured with highly durable, lightweight polyurethane for ground vehicles and they feature a larger base that makes them ideal for use with heavy equipment such as haul trucks, loaders, and cranes. A minimum of four MC3011 wheel chocks must be used for gross vehicle operating weights from 855, 000 - 1, 600, 000 lbs. | Justrite Transport Cart for MC3011 Wheel Chocks, CT1911 (725, 748 kg).