Specification:New and high qualityName: LED RadiatorSize:Diameter 20, 27, 32, 40MMMaterial: aluminumScope of use: suitable for 1W, 3W high-power lamp beads for warmth dissipationDescription: High thermal conductivity and short warmth transfer, directly fix the sunshine board of like minded size on the radiator Included:1pc Note:1. Due to lead measurement, please enable an error of 1-3mm. As various computers exhibit diverse colors, thanks on your understanding, the actual product colour may even be barely diverse from the image.