Seriously I bought these for a basic off road ride and thank goodness I didn't need to use them . apart from what I did about half an hour ago today. Honestly, when used properly, they're about as good as a tow hook. The lady got caught in a pile of snow and spun like crazy and she had the worst day of her month. So I went out and decided to break those seals and put them under the tires. Within seconds she was free in a front-wheel drive SUV. Honestly, everyone should have that and a shovel in their vehicle. The only way.