Lightweight T6 aluminum tube with 303 stainless steel pivot ends Includes both flat top and button head mounting screws Heim joint adjusts for any angle Right and Left hand threads make adjusting easier 3 rod lengths available (choose above when ordering) Overall support size adjusts 1-1/2" 6" support rod - adjustable from 7" to 8-1/2" 8" support rod - adjustable from 9" to 10-1/2" 10" support rod - adjustable from 11" to 12-1/2"