8" Spun Aluminum Tall Cone Material: Aluminum Shape: Cone Diameter: 1-1/2", 2", 3", 4", 6", 8", 10", 11", 12", 14", 16", 18", 20", 22", And 24" Or As Per Request* Thicknes: 2mm Or As Per Request** Height: 12.6" Or As Per Request*** Use: Flat Roof Advantage: Without Welded Seams, Simple & Easy To Install Oem: Acceptable *CNC Spinning Machine Max Diameter Of Raw Material: 1650mm(65") **CNC Spinning Machine Max Thickness Of Raw Material(Carbon Steel): 6mm(0.236") ***CNC Spinning Machine Max Height Of Raw Material(Carbon Steel): 700mm(27")