It sometimes moves a bit, no wheel locks. I don't have any issue with that. Even with it on wheels, it doesn't move around as much as you might think. The floor is far from even or level. It actually slopes such as to make it easier for me to scoot in towards the keys rather than away from them. Plus, when I'm playing out, it is not uncommon for me to play on a carpeted surface where it takes a bit of effort to move it. It varies. I very much like that I can play multiple keyboards and get to a couple of workstations / computers without having to get up.
Anyway, it works for me. Easy to adjust the height, too. ๐