Anderson Metals 1/2 In. Brass Compression Insert, 3-Pack is an essential component designed for use with compression fittings on nylon and plastic hoses. This brass compression insert reinforces and strengthens the hose when tightening the compression fitting, ensuring a secure and leak-resistant connection. Specifically crafted for nylon or polyethylene hoses, it provides added stability and prevents the hose from collapsing or deforming under pressure. By inserting this compression insert into the hose before attaching the fitting, you achieve a reliable and durable connection that stands up to demanding conditions. Model Number: 30561-08