Review on 🔥 High Speed 24V Hydraulic Bearing Brushless 40mm Fan (Pack of 5Pcs) by WINSINN by Will Ridpath

I bought a pack of these to keep on hand for the few Ender 3 FDM printers I have. The practical thing is that they can be used both to cool the hotend and to cool the motherboard. My immediate need at the time of purchase was to replace the fan on the motherboard which was just really noisy. It worked, but there was a terrible squeak. The replacement was an easy replacement, but after just a few months of limited use with the machine only on while printing, it also started making that horrible screeching noise. I replaced the fan again since I had 5, this time I decided to leave the printer on even when not printing just to see if there is a noticeable difference. unfortunately it only started to get louder after 3 or 4 days. Other than that I'm not too upset, the fans were VERY cheap and great to have on hand in case I run into a problem and need a quick fix, but I probably won't be buying again.