These Silent Spinner wheels are the best. 1st: hamsters should not have metal wheel, there paws can get stuck in them & break or injure causing other problems that lead to death. 2nd: most wheels can be noisy, this is quiet. 3rd: Hamsters seem to like these better.
The wheel is quiet, though not silent. A tip for anyone who owns this, if the wheel starts to make noise, put a little vegetable oil in an eye dropper or something like that & put a drop on the outside of the yellow spinner & a drop on the inside, making sure to wipe the inside. That seems to work well & a little vegetable oil will not kill you pet. I have had a lot of hamsters that all seem to love this wheel. I think most small pets will, though they are not for guinea pigs. A bargain just for the quietness of the wheel!