Review on Usongshine 3D Printer Cooling Fan 30x30x10mm 3010 DC 5V Cooling Fan with 2-Pin Wire, Pack of 2 with Mounting Screws by Joshua Coulter

I used these to replace noisy and often stalling fans in two low powered FM transmitters. This required soldering so the connector is unusable. The only problem is that the polarity seems to have changed from what I replaced. Instead of trying to swap the wiring after soldering in, I just reversed the direction on the fan. This made the installation a bit difficult, but it worked. Much quieter than the original fans, even when new. The cooling is constant. Time will tell how they hold up but so far I'm happy.