Okdo Raspberry Pi Aluminium Heat Sinks, 3 pcsIntroducing the Okdo Aluminium Heatsinks, compatible with the Raspberry Pi 4. The low profile and simple heat sink can be attached to the SOC heating chip tightly to prevent it coming loose, while effectively transferring heat and reducing the heat of the Raspberry Pi unit itself.Features and Benefits:Precision cutting and high-quality CNC machined designGood heat dissipation effectSuitable for Raspberry Pi and other development boardsTechnical Features:Material: Aluminum AlloyHeat Dissipation Rate 47.37% Test Env: 76°COperating Temperature: 0°C to 76°C (≦75% RH)