For boats, campers, marinas, pools or patios. FDA approved for drinking water. No vinyl taste. Flexible and easy to coil in all weather. Durable blue-striped white cover won’t mar surfaces. Features high burst strength with 5-ply construction that withstands nozzle shutoff. Full-Flo brass couplings give unrestricted water flow. EZ-on coupler and blue protective collar on 5/8". EZ-on coupler only on 1/2".