Ok, maybe it's just me, but I've never seen wheel weights like this before. They're full of steel "sand" that adjusts....um ok. I understand the concept of what they're supposed to do, but if they're on the ground, they can't do it too well. So I had 4 tires mounted on the new wheels i got for my car and this is what they used for sticky weights. Never heard or saw them before. I put them in the back of the truck, brought them home, put them in the basement and within the hour, all the weights fell off. So much for "Industrial strength tape" blah, I hate them. I'm going to call Monday and if they can't give me the old lead sticky weights, I'll get my money back and go somewhere else. The plastic stuff they're made of just doesn't stay in a curved position to stick to the inside of the wheels. Here's the link to their site. I'm not a fan. Just a heads up if any of you guys get these on your wheels, make sure they don't come off.