... Sink,Short and thick copper heat pipe,2)High bay light heat sink,heat transfer,heat ... 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 fins3,Many shapes and sizes are ... box,etc. Or according to customers' requirements. Copper Heat Pipe Heat Sink