If you race cars with an anglewinder motor/gear configuration, proper gear mesh is obtained using an axle stop. The SCC axle stop uses a straightforward design which is CNC machined from lightweight aluminum and includes a hardened set screw which does not protrude when tightened. Our axle stop is reasonably priced (some of our competitors charge up to twice as much for their stops) with the same quality and precision SCC parts are famous for.