Anderson Metals 5/8 In. Brass Compression Insert, 2-Pack is designed to provide a secure and leak-resistant connection when used with compression fittings on nylon and plastic hoses. This brass compression insert reinforces and strengthens the hose during the tightening process, preventing collapse or deformation under pressure. Specifically made for nylon or polyethylene hoses, it adds stability and durability to the hose at the connection point, ensuring reliable performance in various applications. Model Number: 30561-10