This powerful gate wheel is specifically designed for outdoor fence gates. It incorporates a built-in spring design that not only extends the service life of the spring but also enhances its aesthetic appearance. The built-in spring clamp serves as a shock absorber, effectively reducing stress on gate hardware as the wheel rolls over uneven or rough surfaces, thereby prolonging the lifespan of gate posts and hinges. Equipped with a spring-loaded gate wheel, it automatically adjusts the gate height according to the surrounding terrain, effectively preventing sagging and keeping the fence line level. Each gate wheel boasts a maximum load capacity of 220 lbs., making it effortless to open or close large, heavy gates. The gate wheel is crafted from a thick matte black coated steel plate and double ball bearings, providing robust load-bearing support. Additionally, its 360° swivel fence gate wheel design, paired with a 4 in. wear-resistant rubber caster, enables smooth maneuvering in any direction, ensuring safe and effortless gate movement. Easy to install, it comes with a universal mounting plate, bolts, and screws, suitable for both wooden gates and tubular farm gates. It's the ideal choice for your outdoor fence gate. Material: Metal.