Review on Highly Visible and Durable RV and Trailer Wheel Chocks (2 Pack) - Supports 36,000lbs - Odor Free 🚛 with Non Slip Traction Design and Handle - Built Tough for All Weather and Surfaces - Enhancing Security and Safety by Joshua Morales

What a joke! They are hard plastic, not rubber, even though the description says 'rubber'! I bought these to anchor my 26ft RV on our steep driveway. We hope this makes me feel safer when he's on our steep driveway as we have no other place to park our trailer. In the 5 minutes I had I put them on the front tires of my Ram 1500 2wd just to test their durability. As I put my truck in neutral, they approached them slightly and started sliding down my street. My driveway isn't smooth like some cement driveways, it's ridged. Then I turned on the truck and they continued to slide down my street. Wow, and I have to trust them with a 6300 pound trailer. They are back! Sorry for the product and misrepresentation! DO NOT BUY!