KEYESTUDIO 5V DC Force Electric Lifting Magnet Solenoid Electromagnet Module for Arduino

I know at only 5v, I shouldn't expect much, but it's very noisy and not strong. I believe that a better winding would have made this a lot stronger and quieter....

Works as expected. Fairly weak magnetic force as expected. Gets very hot after a minute of being fully on as expected. Good enough for ferrofluid display. I feel like I should get a 3 pack for this price. However, it’s fine for Amazon prime. Rating would be 5 if price was better.