These rod ends are the best way to add strength, reliability, and flexibility to any situation that requires use of a rod end such as in suspension or steering applications. The JMX series utilizes a high strength Heat treated 4130 Chromoly body with a silver zinc finish with a smooth PTFE (Teflon) liner for smooth operation. The ball is made from heat treated bearing steel for strength and hard chrome polished for a smooth surface. The race is a heat treated alloy steel which means this joint will outlast a normal budget rod end with injection molded race. The JMX series with Teflon lining keeps the joint quiet and tight for years and years of usability.