36 and 48 Inch Seamless All Thread Pipe For Lamps and Fixtures, Comes in Steel or Brass, 1/8 IP, 1/4 IP or 3/8 IP (22380) - Antique Lamp Supply - Quality Lamp Parts Since 1952
Amazon.com: uxcell Lamp Pipe Nipple, M10 Thread 100mm Length Hollow Lamps Repair Part Hardware for Lamp Lights, Zinc Alloy Silver Tone, Pack of 5 : Tools & Home Improvement