* SOLIDLY BUILT - The support frame of this gate caster is made of reinforced steel with galvanized coating, which is not easy to
rust. The black wheels are made of hard rubber with excellent wear resistance. They form a sturdy structure to provide strong
support.
* SPRING-LOADED DESIGN - The spring loaded gate wheel is equipped with an adjustable 4" spring. It will automatically adjust the door height with the surrounding terrain when opening or closing the door, effectively preventing the door from sagging to keep the fence level with the ground.