... Materials: S/S, Brass, Rubber ISO9001:2000,ISO14001:2004,CE Quick Coupling Stainless Steel Flexible Corrugated Hose DN15~65mmMaterials: S/S, Brass ... , RubberISO9001:2000,ISO14001:2004,CE 1)Used for fresh air fan of air-conditioning, Durable ... 5) They are the ideal substitutes of the traditional plastic flexible connector.6) JR-401, JR-402, JR-403, ...