I have two 10' X 10' X 9' 4"tall aluminum DJ lighting trusses. These units are all aluminum, there are 17pcs included in each unit. There are 4- 10" triangular corners, 4-6' long 10" triangular sections for top, there are 5-legs two gates and 2 linier supports plus all hardware and stainless support cables. These units can be used for trade show exhibits, DJ or band lighting store display's or many other uses.