Description: special aluminum heat sink for electronics , computers, electrical appliances, such as supporting, played cooling effect. And this heatsink thermal paste has been specifically labeled pro just tear the paper, you can be assured. Number of pieces of teeth: 7 Reduce the risk of hardware failure because of overheating This heat-sink set is specially designed for Raspberry Pi Specification: Material: Aluminum Color: Silver Size: Approx. 1.4x 1.4x 0.5cm/ 0.55x 0.55x 0.20inch Package Includes: 9 Pieces Heat sinks 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