【Camper Wheel Chock】Wankic stabilizer provides added stabilization and prevents tire shift by applying an opposing force to the two tires.Increase the safety of the car outdoors, whether in a windy environment or a slight slope. 【Stronger and Durable】X shaped wheel chocks made of cast iron and reinforce all connections,don't worry about deformation.The surface is painted with protective paint to prevent rust,Can adapt to a variety of environments and is more durable. 【Wide Application】RV wheel chocks for travel trailers fits even the tightest of spaces reducing down to 3.5" and extending up to 12".Suitable for different models Campers/Travel trailers/RV and Truck. 【Easy to Use】Package contains wrench and hex socket,more time-sacing,easier operation.Easy and quick installation the chocks wheel stabilizer.Bag makes storage convenient. XJBL-JZ8W-ES4C-2FPA