The Vesper by Taskmaster Components is a durable steel trailer wheel is a premium steel wheel created specifically for trailer users. 5-10% weight reduction achieved through advanced engineering, Constructed of 100% premium steel. Vesper is a reliable and beautiful wheel for all trailer applications. Trailer Rim 15X5 Steel White Modular 5 Lug 4.5" Center 3.19"CB 1870#. Rim Size: 15" X 5". Bolt Configuration: 5 Lug 4.5" Center Warranty: Two Years Pack Quantity. Trailer Use Only! *** UPDATED SKU : WS-15050550-XM-14777-BX