The Gunite Ductile Iron Outboard Mount Rear Hub Sub-Assembly is designed to provide superior durability and performance. This hub sub-assembly is made from high carbon alloy for maximum strength and longevity. It is maintenance free and greased for life, so you don't have to worry about regular maintenance. The hub is also coated with different materials to protect it from corrosion and rust. With an overall diameter of 8.78" and an overall length of 8.88", this hub sub-assembly is perfect for your MackPilot vehicle. FleetPride is your First Click in Heavy Duty®.