ARHT-E(R) series male Rod-end Bearings are a high performance, heavy duty stainless steel bearing which is directly used for Motorsport within Formula 3, Formula 4 and GP2. It can be used for other classes of Race cars to improve suspension and ultimately, track time. Why? It's adaptable construction (available in metric series upon request ) with a PTFE fabric liner sliding surface enables better engineering performance and under-the-bonnet design: These bearings are the perfect heavy duty imperial rod-end Bearing for Motorsport and Racing applications.