Flexible PVC dock wheels are designed to rotate around standard 1.5" dock pipe. Made of heavy duty marine grade vinyl with wear resistant center axle bushing. Wheels can be placed over standard 1.5" diameter pipe for use as free floating boat guides or can be mounted to any custom dock bracket which uses 1.5" diameter pipe. Wheels can be stacked together for added protection. Molded from UV resistant, Marine Grade Vinyl. 14" Diameter with 2" inside diameter reinforcement bushing. Inflation valve to adjust firmness. | Taylor Made Dock Post Wheel Black 14"