Add to Cart Best Welds Best Welds Grade R Twin-Line Welding Hose, 3/16 in, 12.5 ft, AA Fittings, Acetylene and Oxygen (1 EA / EA) MSRP: Now: $40.34 Was: High quality Grade R twin-line welding hosesGreen hose carries oxygen to welding equipmentRed hose carries acetyleneHose cover resists oils 907-LB123-A-A Add to Cart