Fitment: For 2004-2017 Ford F150/F250/F350/F450 with and Fit for most brands of bellows-style air springs, Engineered to be compatible with most air spring applications fit for Air Lift’s LoadLifter 5000 series and LoadLifter 7500 XL, Compatible with most six-inch air spring lifting kit Features: 1) Built With A Unique Spiral High-Grade Steel. black surface treatment prevents rust effectively. Key suspension components have been tested. Can withstand a weight of more than 10 T.To ensure the highest quality .