... 1.top quality,low price 2.prompt shipment Galvanized Steel Coupling Outer / Male Connector for Joining Spiral Ducts Purpose: HVAC, inlet ... Steel (With rubber /gasket & No rubber/gasket)Size: Dia.80, 100, 125, 150, 160, 180, 200, 250, 315,355, 400...1500 ... , connector, elbow and many other special pipe fitting. Galvanized Steel Coupling Outer / Male Connector for Joining Spiral Ducts