Material: AL6063 Size: OD160/ID54mm Anodize: Black, silver, gold, natural, etc 100W Height: 170mm 80W Height: 130mm 50WHeight: 80mm 30WHeight: 50mm (Welcome inquiry other ones) Factory light heatsink applaication. This kind of heatsink is the common use heatsink that we have CNC can lathe and have drill and tap machine to make the product for you. Please contact us for details. It is said that life was like a box of chocolates, you never know what you are gonna get. But we just try to show what you want. And never say never.