Features: 1.Anti Slip Function: The anti slip wheel stop prevents the vehicle from moving by keeping the wheel still, which increases the convenience for vehicle maintenance or cargo loading and unloading. 2.Solid Construction: This wheel block is made of premium material, which is weather resistant and wear resistant. And it can be used for a long time. 3.Compact: The wheel blocks can be stacked quickly, without taking up more space for you, the design is small and compact, easy to carry, and a must have for travel. 4.Wide Application: This tire stopper can be wisely used for RVs, cars, trucks, trailers, caravans, and campers. And it is the best choice for you. 5.Easy to Use: This trailer tire stopper is easy and convenient for you to use and remove, which has no complicated operation. Specification: Item Type: Trailer Tire Stopper Size: Approx. 415 x 158 x 188mm / 16.3 x 6.2 x 7.4in Function: Suitable for vehicle maintenance parked downhill or uphill when placed under the wheel position Application: Suitable for RV, car, truck, trailer, caravan, camper