Description: Extra large heavy duty and superior radiator. 10pcs cooling aluminium heat sink can cooling the devices effectively. Include adhesive thermal tape for efficient thermal transfer to the heat sink providing additional cooling to the IC. These heat sinks have profiles which are short enough to fit within standard Raspberry Pi cases. These heat sinks can be applied in other devices such as the BeagleBone to cool processor, regulators, etc. Specification: Material: Metal Size: Approx. 4 x 3 x 2.3 cm / 1.57 x 1.18 x 0.91 inch Package Includes: 10pcs of Black Heat Sink Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement