1/8ips Male Threaded 2in Long 90 Degree Bent Arm - Brushed/Satin Nickel Finish. The Arm is Bent at a 90 Degree Angle from 3/8 inch Diameter Tubing. It Measures 2 inch long with 3/16 inch Long Threads on each end. All Lamp Arms are Hollow to Allow for the Wire to Pass Through.