Larger Aluminum Extruded Round Liquid cooling system heat sinks for LED lighting. We have focus on this new type of heat transfer technology for over 5 years and have achieved 13 patents for it. The thermal conductivity using this liquid cooling thermal system is over 30 times better than copper. Quick details Item Name: Liquid Cooling System Heat Sinks Model NO.: KX-01016 Heat sink Material: Aluminum AA6063/AA6060 Surface finish: Raw material/ silver anodise/ black anodise/blasting anodise/polish etc. Application: Industrial, High Bay, Low Bay, Outdoor LEDs, LED Heat sinks. Packaging: 8pcs/box. or according to your requirement. Origin: Foshan China Delivery time: Within 10 working days.