Matco wheels and brakes

[Turbineheli]

I'm wondering whether 5" Matco wheels and brakes are to be found on gyros
or if other sizes are more common.
If there is any interest among the builder group, I have a new set of Matco wheels and brakes I'd be happy to place in the classified section.

Thanks,

Angier Ames
Helicycle
N3ZQ