Durable construction for reliable gate support Materials: rubber wheel on a sturdy steel frame for longlasting performance. Function: helps lift and support a gate to reduce sag and ease operation. Compatibility: suitable for gate frames with thickness from 2 to 5 inches. Galvanized construction for outdoor longevity Coated and galvanized process provides wear resistance and rustproofing. Ideal for outdoor use, resisting weathering to keep your gate operating smoothly. weight capacity and performance Wheel diameter: 6 inches. Weight capacity: up to 500 pounds. Benefit: reduces gate sag and minimizes stress on hinges. Flexible mounting for various gate frames Mounting: adjustable steel Ubolts. Fits round fence tubes from 15/8 to 2 inches in diameter. Flexibility to accommodate common gate frame sizes without special tools. Use scenarios Sagging driveway or entry gates: install to support the gate near the hinge, reducing sag and hinge wear for easier opening and longer hinge life. Heavy wooden or metal gates exposed to wind: the wheel minimizes strain on the frame and keeps the gate aligned. Gates with varying tube sizes: adjustable Ubolts provide quick setup on different round fence tubes without needing adapters.