National 343-249 axle hub cap, a heavy duty cast aluminum truck hub cap. Cast aluminum construction is the defining feature of this National cap, listed here with our National Seals. A genuine National part from Pro Gear and Transmission.FeaturesNational 343-249 axle hub capHeavy duty truck hub capCast aluminum constructionGenuine National partTech SpecsType: Axle hub capMaterial: Cast aluminumDuty: Heavy duty truck