WINSINN 50mm 5015 Tiny Cooling USB Blower Fan 5V, 50mm Micro Mini USB 5 Volt Fans Blower Turbine Turbo Hydraulic Bearing, 1000mm/39in Cable Brushless Cooling 50mmx15mm (Pack of 4Pcs)

I needed a lot better cooling for my Vyper. I printed out a new cooling duct setup from cults3d. It uses these 15xs5 fans over the stock 10x40 fans. One of these fans puts out more air than both the stock fans. With two fans blowing. I get so much less stinging.

The product is fine. I'm using it to cool a voltage boost regulator. The only thing I disk my like was they were all tied up together. The connector doesn't make it easy. It took more took time releasing the knot than scissors soldering it.

Good price point, used 2 of the four and both seem to work well. They are not quiet at all - and not just air noise but bearing noise is noticeable so we'll see how long they last. I bought 2 of another brand that both failed to operate and I missed the return window. I'm using these for a custom print fan blower on 2 different model of QIDIs, working okay (minus the noise) so far.

Great for modding my 3D printer part cooling system. Lightweight, good airflow, and relatively quiet. Plenty of cable length foroat applications and I had no issue trimming down the cables for my use.

use winnsin brand alot they are good fans

They're cheap and they rattle, but do work. There's "fixes" on printanbles.com (anti rattle, rattle death etc...) that kinda fix them. I used them on my ender 3 v3 se, they work but it you want a quieter experience than stock 4010s these probably ain't it.

Mighty worth all 4. Cooling all my equipment.

The media could not be loaded. These fans push a lot of air, so much so that i have to limit the power to 50% or my nozzle would cool down too much. But be aware that these bearings allow the fans to move up and down within the enclosure, creating a rattle. Otherwise they’re super great