Type T Twinline Welding Hose Sold by the foot, cut to length. Continental Contitech Type T Twinline Welding Hose (1/4" hose) Inside layer constructed of Wingprene® synthetic rubber, compatible with all common welding fuel gases including propane, natural gas and propylene Outside layer constructed of Chemivic synthetic rubber with a smooth cover Reinforced with spiral synthetic yarn Meets ARPM IP-7 and CGA E-1 standards for Grade T welding hose and is non-conductive Max WP 200 psi (1.38 mpa) Ends are cut raw (no fittings) Options 20027465 - 1/4" (6.4mm) I.D 20027498 - 3/8" (9.5mm) I.D 5% Discount added at checkout for orders of 25+ feet Available upon request (Contact us at [email protected] for pricing and eta) 20027443 - 3/16" (4.8 mm) I.D 20027480 - 5/16" (7.9 mm) I.D What is the difference between Type T hose and Type R hose? Type T hose is engineered to resist the chemical reaction that occurs between rubber hose and the natural oils in propane, natural gas and propylene that over time will degraded Type R hose causing it to dry and crack. It is safe to use Acetylene with both types of hose but type T is more expensive so it is something to consider when making a purchase.