Grade R Twin Line Welding Hose, 3 16 in x 25 ft, BB Fittings, Acetylene and Oxygen no checkout high density tape Provides a highly high density tape Provides a highly resistant seal on pipe threads for all types of service Suitable for use with solvents Ideal for environmental applications They are comprised of the best available basic meltblown polypropylene ENV™ Oil Sorbents are packed in distinctive green bags and are the obvious choice when you need low cost plus high performance Economy High quality Grade R twin line welding hoses Green hose carries oxygen to welding equipment Red hose carries acetylene Hose cover resists oils