"Acetylene double welding hose comes complete with fittings. High-quality, neoprene-covered hose is flexible and kinkproof. Grade R acetylene only. Hose Type Grade R acetylene only, Hose Diameter in. 1/4, Color Red, Material Rubber, Product Type Welding hose, Finish Type Neoprene, Hose Length ft. 25, Hose Fitting Size in. NPT 1/4."