These fans work fine. I used one on the V6 hotend that I installed on my Ender 3 and the other for the circuit board fan in my case. They are not silent, but much quieter than regular ones. The only thing to note is that the terminals on the ones I received were mini JST, but as I have a JST crimp kit this wasn't an issue.
π Power Up Your Gaming Rig with AMD Ryzen 5 2600 Processor with Wraith Stealth Cooler - YD2600BBAFBOX
116 Review
AMD Phenom II X4 940 π» Black Edition 3.0GHz AM2+ Processor - Retail
96 Review
Seagate Barracuda 1TB HDD ST1000DM003
93 Review
Unleash High-Performance with AMD Ryzen 5 3600XT Processor & Wraith Spire Cooler
223 Review
MacBook Retina 13-inch (A1425, A1502) and π© 15-inch (A1398) Bottom Case Screw Set with Pentalobe Screwdriver
11 Review
π§ Premium Repair Replacement Screws & Tools for MacBook Pro Retina 15"/13" - Complete Bottom Case Set
10 Review
Glarks 660 Pieces Phillips Assortment Motherboard
10 Review
π₯οΈ Helifouner 450-Piece Computer Standoffs Spacer Screws Kit: Ideal for Hard Drive, Motherboard, Fan, Power Graphics & Computer Cases
10 Review