Loc-Line Coolant Hose Component, Acetal Copolymer, Double Socket, 1/4" Diameter, 1/4" Hose ID (Pack of 4) Double socket adapter reverses hose direction to add a second connector Fitting connects to Loc-Line modular hose on both ends Acetal copolymer plastic has an orange color, resists corrosion and moisture, and can be used with acetone, alcohol, ethyl, greases, oils, commercial dish detergents, gasoline, lacquer solvents, and sodium hydroxide Maximum operating temperature of 170 degrees F Material meets NSF/ANSI standards 14, 51, and 61 for drinking (potable) water