Anderson Metals 5/16 In. Brass Compression Insert, 5-Pack is a reliable component designed to work with compression fittings on nylon and plastic hoses. This brass compression insert reinforces and strengthens the hose when tightening the compression fitting, creating a secure and leak-resistant connection. Specifically crafted for use with nylon or polyethylene hoses, it is inserted into the hose before attaching the compression fitting to provide added stability and durability at the connection point. This helps prevent the hose from collapsing or deforming under pressure, ensuring a long-lasting and dependable connection for your plumbing or irrigation needs. Model Number: 30561-05