... :2008,BV,RoHS,REACH Aluminum Extrusion LED Heat Sink for Downlight heatsink 1 cooling fin ,heatsink,aluminum cooling fin,aluminum heatsink, aluminum pin fin heat sink , aluminum LED cooling fin 2 material:aluminum3 ... use hardware, jewelry parts, Electronic plug-in, aviation plug/socket with a pinhole, connector axial parts, watches and clocks,Glasses shaft ...