We make each hose to order out of Kuri-tec hose material, which is two layer PVC. The two layer structure gives this material unprecedented strength and durability not found anywhere else in RV/Marine hoses. The hose is rated for 200 PSI, and will not kink or bulge, and we guarantee it for 1 year against material or workmanship defects. For the fittings, we use the highest quality Dixon lead free brass fittings. These are machined to a high degree of precision vs the press fit fittings you normally see with RV hoses. While our hoses are not cheap, they are not cheaply made!