... weight and high performance. 2,Copper column-shape heat pipe Aluminum LED heat sink,Bonded fins,Zipper fins and extruded finsFeature ... :heat pipe+copper base+aluminum fins 3,Many shapes and sizes are availableWe ... models,please contact us for more info. 4,Material: Extrusion Aluminum 6063, Al6061,etc. 5,Surface treatment: Mill finished, anodizing, ...