Wahing machine connector. ProLine Series offers a high-quality connector that features an inner tube made of reinforced PVC coated with braided stainless steel strands that ensure secure water flow, no kinking or crimping and protection from most common corrosive materials found in commercial and residential locations. This line has built-in hose thread connections that can be hand tightened, including the rubber washers, allowing for a water-tight seal. This model features an in-built elbow to the end connection, which allows for a connection that prevents kinking and crimping.