UPC (Uniform Plumbing Code), NSF 61 & 372 lead-free (National Sanitation Foundation) & CSA (Canadian Standards Association) certified ensures product safety 5-year limited warranty Clear vinyl surrounds flexible & durable PVC inner core tubing that's woven with polyester for added strength under pressure 3/8" FCM (Female Compression) x 3/8" FCM with attached 3/8" MIP (Male Iron Pipe) brass elbow Braided premium stainless steel resists punctures, crimping & kinking Permanently attached stainless steel couplings & brass stems provide secure connections Durable design protects against bursting & cracking Meets or exceeds industry certification standards & requirements of most appliance manufacturers