Material: Aluminum-Magnesium Alloy 535Finish: MillRound Base Size: 2-3/4"I.D. Size: 1-3/8"Pipe Size: 1"Set Screw Size: 3/8"-16 Thread X 1/2" LengthHex Key Size: 3/16"Mounting Hole Size: 5/16"Can Be Used With Any Pipe Including Aluminum, Galvanized Steel, Stainless Steel And Black IronFitting Rotates Approximately 80 Degrees Both WaysDesigned To Attach Pipe Ends To Walls, Ceilings Or Floors That Are Not At 90 Degree AngleGreat For Interior Or Exterior RailingsHigh Corrosion Resistance