Specification:New and high qualityName: LED RadiatorSize:Diameter 20, 27, 32, 40MMMaterial: aluminumScope of use: appropriate for 1W, 3W high-power lamp beads for warmth dissipationDescription: High thermal conductivity and immediate warm temperature transfer, instantly fix the light board of compatible length on the radiator Included:1pc Note:1. Due to steer measurement, please enable an error of 1-3mm. As assorted computer systems exhibit different colors, thanks to your understanding, the particular product color could even be slightly various from the image.