Decorative Arm CLP-X11 is constructed of Extruded Aluminum Tubing. Mount over Round Poles or Tenons of 3”, 3-1/2″, 4”, 4-1/2″, or 5″ OD, CLP-X11 and is secured with 3/8” Stainless Steel Set Screws. Contact us for custom configuration or others mounting. All Decorative Arms are Proudly Designed, Fabricated and Assembled in the USA