【High Quality Steel】Made from solid heavy-duty steel, corrosion resistance, rust-proof for long lasting outdoor use. Bearing loads up to 125 Lbs, allowing to open and close large or heavy gate freely. 【Spring-loaded Gate Caster】Spring loaded design, when caster is rolling over rough or uneven surfaces the spring-loaded, acts as a shock absorber to ensure that it stays in contact with the ground, providing stability, reducing the pressure on the gate hardware and extend the life of the gate posts and hinges. 【Easy to Install】 Heavy duty universal mounting plate to easily attach to fence gate. 【360° Swivel Casters】4 inch hard rubber caster with 360 degree swivel top, makes it easy to move any direction that you need allowing you to move gate safely, as well as preventing your gate from sagging. 【Heavy Duty Bearings】 This sturdy gate caster wheel can be support with large wooden or steel heavy gates up to 125 lbs. 【125 Lb Load Capacity】 【Fasteners Not Included】 Spring-Loaded