Provides up to 5000 lbs of load-leveling capacity. Keeps ride desired height. Air pressure in springs can be adjusted from 5 to 100 psi manually. Can be used for commercial purposes. Requires drilling for installation. Installation instructions aren’t included, professional installation is recommended. Ford F450 Super Duty 2019. Does not fit cab and chassis models. Can work with most side-mount fifth wheel hitches. 1 x Air Spring Helper Leveling Kit (As picture shows). Quality products at affordable prices. We are always happy to help, simply message us with any questions and we’ll be able to assist within 24 hours.