The Forney 86101 R-Grade Twin Oxy-Acetylene Hose is suitable for use with oxygen-acetylene only. Red hose for acetylene. Green hose for oxygen. It is to be used with acetylene fuel gas only. It resists kinks, heat, weather and solvents. Bleed hoses when not in use for at least 30 minutes. Couple with one-Inch ferrules only. Includes standard "B" fittings. Forney Industries is one of America's longest operating family-owned metal working product companies. Founded in 1932, Forney offers more than 5,000 products for the hardware, automotive, farm and ranch and do-it-yourself markets. If you've got metal working questions, we've got answers. We're committed to your success regardless of location size or needs. This hose assembly measures 3/16" (4.76mm) by 20' (6.1m). Claims for warranty must be made within 90 days of the date of purchase. Proof of purchase required. This warranty does not cover any product that has been subject to misuse, neglect, negligence or accident, or that has been used in any way contrary to the purpose intended.