Chanzon 25pcs 1W 3W 5W LED Heat Sink (6 pin White) Aluminum Base Plate Panel PCB Circuit Board Substrate 20mm Star DIY Heat Sink Cooling for RGB COB High Power LED Chips Lamp Beads 3 Watt

6pins for 3W RGB High Power LED Chips Diameter:20mm (0.79 inch) / Thickness:1.5mm (0.06 inch) Low Thermal Resistance Welding / Rapid Heat Transfer / Thermal Conductivity: 1.6 Surface Treatment: Anodizing Total Shipping Weight: 1.23oz / 0.035kg (Pack of 25)