WINSINN DC 25mm Fan 24V 2510 Hydraulic Bearing Brushless Cooling 25mmx10mm 2PIN (Pack of 5Pcs)

WINSINN makes nice fans. I've used this with 9 volts and no issues.

I purchased these 25mm x 10mm fans for my older Robo3D R1 3D printer. The small hotend fan had been going out for some time making this awful noise when you powered on the printer and then would go away after some time. The old fan was also extremely loud even after the squealing noise went away. I tried the oiling the bearing as you will find on many YouTube videos but the repair was short lived and didn't do away with the loud fan sound.The connector on these fans didn't match mine which I knew when purchasing but removing the female pins from the connector body is relatively easy and I knew I could swap connectors from my old fan to the new one.After connecting everything up and powering on the printer.. Wow what a difference in the noise level, much more quieter and the air flow seems to be the same if not better then the original fan. The fans came in a nice little clear box which is great for keeping the others together if I should need in the future. I can't speak for longevity as I just put one in few minutes ago but at this point I would still recommend them if you need to replace your hotend fan that's dieing. Well worth the small cost in my opinion.

Great value. Time will tell how well they hold up - they are dual ball bearing, so I hopefully they'll last a while.They are a bit on the loud side, with a bit of a turbine whine sound. (They're high-speed)

They come with long power wires, I didn't need them so long but simply cut and soldered to my desired length. It is important to keep the connector on the wire as it is fully crimped and stays on well. If running at alternate speed, the number of fan blades and thier angles will cause varying levels of noise. I ran mine through a TO-90 FET 300ma transistor to make sure I don't blow any channels in the ESP32, very easy to interface.Mounting holes are well aligned (some other fans are not and user needs to adjust the case holes). Noise at full speed is low.Very good seller (lots of variation in product line).Thanks

They work, but they don't blow much air. I should have paid more for a similar item and shipping from a different marketplace. My fault.

Great little fans and especially great performances.During this pandemic I use these fans in my face mask. The little gan has run for 2 days on a small Goal Zero battery and battery is still full. Fans are small and light weight and are perfect for making small ventilation/air circulation possible.

Update: I used the fan as a replacement for the Samsung dishwasher. It's a perfect fit, minus the connector. however it's starting to make noises, not like it was, But still making noises. Its been installed for roughly 69 days.

I mounted one of these fans to cool four 3W LEDs mounted to a heat sink. Fan may be small, but it made a huge difference in how hot the heatsink and LEDs got. I've had two of these fans running 4 hours and seem to have no issues. Quiet and great price too.