1. High quality plastic construction, not easy to crack and durable for long term use. 2. Designed to prevent the vehicle from moving by holding the wheel in place. 3. Compact size allows for convenient placement in your car while not taking up too much space. 4. Sturdy construction keeps the vehicle stable and durable. 5. Lightweight for easy pickup from the ground, prevent tires from rolling. Specification: Features: High quality plastic construction, not easy to crack and durable for long term use. Designed to prevent the vehicle from moving by holding the wheel in place. Compact size allows for convenient placement in your car while not taking up too much space. Sturdy construction keeps the vehicle stable and durable. Direct replacement, perfect to replace your old or broken one. Lightweight for easy pickup from the ground, prevent tires from rolling. Applicable for car trailer, truck or other vehicles wheel tire. Convenient for repairing your vehicle or loading/unloading goods,