LASCO 19-9611 90-Degree Elbow Barb Fitting with 3/4-Inch Insert, Nylon Nylon barb fitting 3/4-inch insert 90 degree elbow Use on I.D. size poly tubing Working pressure 150 psi, up to 175 degree Fahrenheit Do not use with acid based fertilizers, bromine, chlorine, fluorine, xylene or any acids