Edit: After the temperature dropped below 40 degrees these shock absorbers stopped working. I do not recommend. I am revising my rating to 1 star. Worked great, great price. Though they're barely strong enough to hold my thick steel toolbox lid. The listing says they each apply 40 pounds of force - I'm pretty sure this toolbox lid doesn't weigh 80 pounds, but like I said, they barely keep it up. It would be better for a lighter/aluminum tool box.