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Constructed of a lightweight urethane that resists oil, fuel, and other solvents. The curved surface contours to fit tires and features a raised diamond plate pattern. A mold-in hole continues through the width of the chock for attaching chain, strap, or hanger. Orange-colored for excellent visibility.
Use to meet federal regulation OSHA 29 CFR 1910.178(k)(1): The brakes of highway trucks shall be set and wheel chocks placed under the rear wheels to prevent the trucks from rolling while they are boarded with powered industrial trucks.
Also available in single quantities: Urethane Wheel Chock.
California Residents: WARNING
These are for large diameter truck tires. They’re too big for the 16 inch wheels on my travel trailer, making minimal contact with the tires. Probably fine for 20 inch and larger wheel sizes.