GDSTIME 40mm Brushless Cooling Fan, 40mm x 40mm x 20mm 24V DC Fan 2Pin 6000RPM for 3D Printer 2-Pack

works well

Works flawlessly, perfect size, easy to install.

I had a hotend cooling fan go bad on my 3D printer, and I wanted to upgrade it (My printer uses the same fan for hotend and part cooling, so more airflow is always better), and grabbed one of these. Not much to say, really... It fit in the same spot (Although it is much thicker than a "Generic" 40MM fan so it may not work for some printers), worked when I plugged it in, and although it is a little more noisy, it moves a LOT more air. Only real complaint was I wish the wires were longer. Would have been nice to just wire it right up to the control board, but instead I had to solder and heat-shrink them together by the hotend. Biggest problem I could see someone else having is either the fan not fitting in a smaller hotend like the one on the Ender 3, or accidentally buying this 24V fan for their 12V printer, in which case it would still work, but not move much air at all and may cause printing problems. Double-check your voltages!

It's a fan. It's not as quiet as a Noctua, but you knew that. Quality seems fine.

I used this to replace the main processor board cooling fan on a Game King video poker machine. It's a perfect fit and is VERY quiet compared to the factory installed fan. The only issue is I had to cut the plug from the old fan and connect it to this new one. Not a big deal at all. So far I give this five stars. We'll see how long it lasts but for now it's perfect

Bought as a cooling replacement for lasertree 40w engraving laser. Seems like the rpm’s are a little slow and had to change the plug clip but all in all it works for what I needed. Product it’s self seems good just a little slow