Application: Widely used with high-power semiconductor devices such as power transistors and optoelectronics such as light emitting diodes (LEDs), etc. Features: A heat sink is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device, thereby allowing regulation of the device's temperature at optimal levels. In computers, heat sinks are used to cool central processing units or graphics processors. Specifications: Product name: Aluminum Heat Sink Material: Aluminum; Color: Sliver Tone Size: 100 x 60 x 10mm/ 3.94 x 2.36 x 0.39 inch (L* W* H) It can cool down the board and make your electronic equipment operate safely. Reduce the risk of hardware failure because of overheating. Note: 1. Please check the specification table and make sure that the size of the heatsink fits that of your component. 2. Please allow 1-3mm error due to manual measurement. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package Included: 4pcs Sliver Tone Aluminum Heat Sink