Review on 🚗 Rying Wheel Weights Black 1/2oz: High-Quality Stick-on Weights for Cars, Trucks, SUVs, Motorcycles, and More! by Adam Huper

I didn't actually use them for their intended purpose. Our Scouts BSA team hosts an annual Pinewood Derby Clinic for local Cub Scout packs. I spotted these and decided to try them because they are a lot cheaper than the scales that are sold to attach to wooden cars. Your adhesion is amazing. They are very flat so they don't get in the way of the rolling car. And of course you can add the number you want to get the car weight you want.