As a New-on product, Raspberry Pi 3 Model B has newly 64-bit quad-core and internal WI-FI and Bluetooth.
Its high performance improved tenfold compared with the former generation.
That is to say, you should equip it with strong cooling system.
The set of heatsinks can meet your demands very well.
Note: The Raspberry Pi module does not includes.
6 x Aluminum Heat sink
3 x Copper heat sink