This heavy-duty gate helper wheel features a 4.3-inch rubber tire mounted on a steel caster with a silver powder-coated finish for outdoor durability. The spring-loaded design with 360-degree swivel allows automatic height adjustment on uneven ground, preventing gate sag and extending the life of posts and hinges. The upgraded right-angle mounting plate includes seven mounting holes for firm installation on the gate bottom. Designed for right-hand gate installation.