2" mecanum wheels

[Basel A]

There are a number of places you can purchase them, here's one such place: http://www.robotmarketplace.com/prod...UM-SET-V2.html
I believe this is the actual original manufacturer: http://www.fingertechrobotics.com/pr...mecanum-set-v2

We adapted them to a hex drive using these great instructions: https://www.chiefdelphi.com/media/papers/3237

[Peyton Yeung]

I know 868 3d printed some for their robot. You might try contacting them.

[Mechvet]

http://www.thingiverse.com/thing:7248

That's for a 1" mecanum. Scale by 2x before slicing.