5-ply construction, high burst strength FDA approved liner material for drinking water safety. Nickel plated couplings are drinking/potable water safe. Full-Flo brass couplings for unrestricted water flow. EZ-On coupler on 1/2 in hose. EZ-On coupler on andprotective collar on 5/8 in hose. Extra kink resistant, flexible and easy to coil in all weather. Durable, blue-striped white cover won't mar surfaces.