Guardian Industrial Products Rage Powersports DH-WC-3 Wheel Chock (Heavy Duty 120 ton 41' for Fire Trucks and Hauler Trucks) Hauler truck, fire truck and commercial vehicle wheel chock for 41" tires or larger Integrated handle can be used to tie-off wheel chocks for quick removal Resists oil, gas, solvent and water Heavy duty thermoplastic rubber with a 120 ton capacity Restricts wheel movement per OSHA safety guidelines 1910.178(k)(1), 1910.178(m)(7), and 1910.111(f)(9)