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Levonix Aluminum 3W LED PCB, Thickness: 32 mm
LED - 3W Aluminum PCB (5 Pack, Warm White) - COM-13104 - SparkFun Electronics
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1W 3W DC12V-DC24V LED PCB Component 30mm Wide Round Board – LEDLightsWorld
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Aluminum Printed Circuit Board (PCB) for 1W, 3W LED 20mm
![1W-3W Yellow/Gold High Power LED with 16mm Star PCB Heatsink Base [KW-13YL16] - US$0.80 : Topledlight](http://www.topledlight.com/images/v/201409/14104322270.jpg "1W-3W Yellow/Gold High Power LED with 16mm Star PCB Heatsink Base [KW-13YL16] - US$0.80 : Topledlight")