Lightweight 4 pieces/setof aluminum heat sinks with adhesive backing strip to stick firm With thermal transfer peel-and-stick tape, that allow for easy installation on to your board. Help keep your Pi cool while overclocking These pure aluminum heat sinks include adhesive thermal tape for efficient thermal transfer to the heat sink providing additional cooling to the IC. Also, it is easy to remove with a razor blade, so you can remove the heatsink without damaging the chips. These heat sinks can be used with other devices such as the Beaglebone to cool processor, regulators, etc.