Product description: Enokay Raspberry Pi 4 Model B Heat Sink
4 Pieces cooling heat sink for Raspberry Pi models B These pure aluminum heat sinks include adhesive thermal tape for efficient thermal transfer to the heat sink providing additional cooling to the IC. Material: Aluminium
Package includes: 1 * 14mm x 14mm x 5.5mm aluminum heat sink 1 * 14mm x 10mm x 5.5mm aluminum heat sink 2 * 8.8mm x 8.8mm x 5.2mm aluminum heat sink