ITEM NAME:30x Aluminum Heat Sink Cooling Fin fit for Computer Memory Chip Power IC Hf 10pcs Aluminum Heat Sink Cooling Fin for Computer Memory Chip Power IC LED 8.8X8.8X5mm SPECIFICATIONS.(Fin number: 5. Item included: 10 x Aluminum Heat Sink. 3) Cool down the board effective and make it operate better. Material: Aluminum. 1) Aluminum material and durable. 2) Color may vary slightly due to the color setting of each individual monitor.