Listing includes one 1" x 1" x 12" long square tube made from 6063 Aluminum. Buy as many as you need. Outside Thickness/Width tolerance: -.005" to +.005" Wall Thickness tolerance: -.005" to +.005" Length tolerance: +.000" to +.250" Temper: T52 Machined Finish (There will be some normal scratches on Aluminum) The pictures are representative of the item you are purchasing. The picture of multiple tubes/bars is for illustrative purposes only.