Anderson Metals 1/4 In. Brass Compression Insert, 5-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, preventing it from collapsing or deforming under pressure. Specifically made for nylon or polyethylene hoses, it is inserted before attaching the compression fitting to add stability and durability to the connection point. This ensures a reliable performance in various applications where hose integrity is critical. Model Number: 30561-04