materials Tiregrade solid rubber wheels paired with a sturdy steel frame, designed to handle heavy loads while remaining wear resistant and rust resistant for durable outdoor use. Load capacity Each 6 inch gate caster supports up to 500 lbs, helping to prevent gate sag and extending the life of your gate hinges. Elevation adjustment Height can be adjusted up to 8 3/4 inches, enabling secure lifting for level operation and reliable performance. Adjustable installation Includes adjustable steel U bolts that fit round fence pipes from 1 5/8 inches to 2 inches, providing a snug and secure fit for your gate frame. Specifications and compatibility Wheel diameter: 6 inches Load capacity: 500 lbs per caster Material: tiregrade solid rubber wheel, steel construction Finish: rust resistant for outdoor use Use scenarios Upgrade residential driveway gates to reduce sag and keep the gate level for smooth operation. Install on farm or barn gates to support heavy panels and protect hinge wear in exposed outdoor conditions. Use on outdoor storage enclosures or rolling fence sections that require adjustable mounting on round posts and precise height alignment.