Review on 🖥️ Silent 50mm x 50mm x 10mm Brushless Cooling Fan for 3D Printer & Computer Case - Pack of 2 by Jason Pinkney

Within a week of installing one of the two fans I bought, it was the noisiest fan in the room. I checked another fan and it also has a "rattle". It's like the ball bearings (if it has any ball bearings at all) are too small or a bearing is missing. I wanted to replace my years old always running fan because it was getting noisy. So with two noisy "new" fans I went back to the old one by cleaning the blades with a cotton swab. While not perfect, it's much quieter than any of the newer fans.