This 2 pack of CAMP Rudder/Trim TAB ZINC 5" ZINC Anode Marine is a must-have for any boater. The highly durable zinc material ensures that your outboard engine and components are protected from corrosion and wear. With a brand name you can trust, CAMP has designed these anodes to fit most boats and are easy to install. The R-4 part number is a great indicator of quality and compatibility. Whether you're a professional or a recreational boater, these anodes are a valuable addition to your boat parts and accessories collection. Don't miss out on the opportunity to protect your investment and extend the life of your outboard engine with this reliable and effective CAMP product.