★Prevents tires from rolling, use with ramps or other lifting devices. universal wheel chocks for car camper boat,vehicle chocks,trailer wheel chock
★Package Included: 2pcs plastic car wheel chocks stoppers + 1pc storage bag. Product Sizes:8 x 4.7 x 4.1 inches
★Usage: normally fits for cars trailers caravans motorcycle vehicles have 20inch diameter tire or even smaller. Not for commercial purpose.

Method：
Place on flat ground,push firmly under tire(s)

Caution：
1. Always use brake.Never place yourself under or behind unstable vehicles
2. Prolonged exposure to sunlight can cause chock to weaken