Material: Aluminum-Magnesium Alloy 535Finish: MillI.D. Size: 1-5/8"Pipe Size: 1-1/4"Set Screw Size: 3/8"-16 Thread X 1/2" LengthHex Key Size: 3/16"Can Be Used With Any Pipe Including Aluminum, Galvanized Steel, Stainless Steel And Black IronFitting Rotates Approximately 80 Degrees Both WaysDesigned To Attach Pipes That Are Not At 90 Degree Angles To Formulate A "Tee" ConnectionGreat For Interior Or Exterior RailingsHigh Corrosion Resistance