anodized black aluminum heat sink set for Raspberry Pi models A, B, B+, 2, 3 , 3 B+ and 4 boards. These pure aluminum heatsink include heat conductive adhesive tape for optimum heat transfer. These heat sinks have profiles which are short enough to fit within standard Raspberry Pi cases. These heat sinks kit can be applied in other devices to cool processor, regulators, VRAM VGA RAM, IC Chips, MOSFET SCR, Southbridge, Northbridge etc.