4PCS Raspberry Pi Fan DC 5V/3.3V Brushless Cooling Fan with Screws for Raspberry Pi 3 B+ 3B 2B
https://www.vogueparade.com/shopping/EN/200366148/1/1005003382976899/4pcs-raspberry-pi-fan-dc-5v33v-brushless-cooling-fan-with-screws-for-raspberry-pi-3-b-3b-2b//