Wheel Chock Set - Up to 17” Wide WheelsFor towing and maintenance, CURT wheel chocks are the perfect accessory to keep on hand. Any time getting underneath the car or truck to change the oil, perform maintenance, or make repairs is needed, chocking the wheels is a vital safety measure. Maybe just going under the hood to check fluid levels is a good idea to make sure the vehicle is not going anywhere. Likewise, whenever a vehicle is hitched up to a trailer and parked for an extended period of time—whether it be at the campground or the boat landing—using wheel chocks ensures the towing rig will not be rolling away without a person in the driver seat.To ensure safety, a vehicle's parking brake should not be the only thing to keep the weight of the vehicle and trailer in place, especially if they are parked on any kind of incline. CURT wheel chocks are designed to be used together with the emergency brake to stop a vehicle from moving. The chocks are constructed from durable plastic and offer a generous 17" width. This allows them to be used with a variety of wheel and vehicle sizes, though they should never be used for commercial applications. CURT wheel chocks also feature a raised tread to better grip the wheel and saw-tooth edges on the base for better traction on the ground.Features:Ideal for chocking wheels on a parked trailerPerfect for adding safety during vehicle maintenanceCompatible with wheels up to 17 in. wideThe raised tread offers a better grip on the wheelSaw-tooth edges on the base provide solid traction on the groundConstructed from durable plasticAlways use the vehicle brakeNot for commercial useSpecifications:Finish: Black plasticHub Warehouse: D25Warranty: Limited lifetime warranty (one-year finish, one-year parts)