Product Details: The Stemco 6-Bolt Grease Hub Cap is a strong and durable aluminum casting designed to provide safe and secure wheel end protection. It is equipped with a distinct red rubber plug, making it easy to differentiate from lower quality competitors. The hubcap glass material is designed to withstand higher heat temperatures before discoloring or deforming. The 6-Bolt design ensures a secure fit and prevents any potential leakage of grease or other contaminants. This hub cap is the perfect choice for those looking for a reliable and long-lasting wheel end protection solution. FleetPride is your First Click in Heavy Duty®.