Ford 9 inch axle bearing spacer?

Detroit Axle - 4WD Front Wheel Bearing Hubs for 2000-2003 Ford F-150, 1997-1999 F-250, 2 Wheel Bearing and Hubs Assembly Set Replacement, Pair Hubs

These axle packages are EXTREMELY popular. Stronger than kingpin stuff, run larger axle shafts, better steering, easier to assemble. If your building an axle for your ride this is strongest for the money 👊🏻 | Jake Burkey Rock Bouncer

Wheel & Axle | Definition, Examples & Mechanical Advantage

How Does An Axle Work | Video, Diagram, and Images