... and highbay light.Light 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 ... 5,Surface treatment: Mill finished, anodizing, powder coating, brushing, polishing. etc. 6,Color available: White, black, silver, green, red. etc.Punching, drilling ...