Most teams use a custom hub. Something like this:
If you can’t make something like that, consider trying these new shooter wheels from WCP with an integrated 1/2" hex hub:
https://www.wcproducts.com/view-all/new-frc-products/solidrollerwheels
Most teams use a custom hub. Something like this:
If you can’t make something like that, consider trying these new shooter wheels from WCP with an integrated 1/2" hex hub:
https://www.wcproducts.com/view-all/new-frc-products/solidrollerwheels