Profile: Designation Ltd. specializes in the supply and assembly of hoses and couplings. Our air conditioning hose is designed for automotive and commercial air conditioning systems. This hose is found on mobile plant, buses, and agricultural equipment. It has very low permeability to refrigerants, and is compact. Our composite hose is built by using thermoplastic layers supported internally and externally by a galvanized and aluminum wire helix. Our hydraulic hose adaptors come in various shapes, sizes, and threads. We stock BSP, JIC, Metric, ORFS, UNF, NPT, NPSM, and some JIS in all manner of combination. Our Bauer couplings are made from high quality steel, and have a galvanized finish. These couplings are particularly effective when used with drag hoses. On these, the lever rings are reversed, and sit against the female part.