Review on AFA Tooling - Set of 4 Heavy Duty Rubber Wheel Chocks for Camper, Trailer, RV, Truck, Car or ATV – Quick Grip Ribbed Design, Ergonomic Carry Handles by Cornelius Mosley

I'm impressed. Bought these to replace my yellow plastic ones that said 'replace with (7 years ago)'. They're a bit narrower but the same height and infinitely more powerful, fit a lot better on the tires (at least on a 90's Toyota), grip the concrete really well and I like the grips. I was concerned about the smell but was relieved to smell nothing more than the smell of a new tire up close. I won't get upset because I threw away "old screamers". And you will definitely feel safer with them.