Using this WildKart racing rear wheel hub is straightforward. First, select the right length for your needs - either the 75mm short or 95mm medium option. Make sure to properly align the 8mm keyway when installing the hub. The two - bolt clamp design helps secure it in place. When it comes to maintenance, regularly check the 8mm wheel studs for any signs of wear or looseness. Clean the aluminum hub with a mild cleaner to keep it in good condition. Also, be careful not to overtighten the bolts as it might damage the hub.