b'TUBEALUMINUM - COPPER - NYLON - STEEL- VINYLAIR BRAKE TUBE 42COPPER TUBE - GENERAL USE (ASTM B75) 46COPPER TUBE - REFRIGERATION (ASTM B280).46POLYETHYLENE TUBE (INDUSTRIAL GRADE ) .43 E B U TPOLYURETHANE (FUEL LINE) CLEAR TUBE .45STEEL TUBE (S.A.E. 527) .46VINYL TUBE (CLEAR) .44NOTE:Use of Fairview hose and tube with other than Fairview original recommended fittings may void warranty. Verify with a Fairview representative prior to installation.41'