op roller hub diameter?

GoldenMotor.com

Andybm514

New Member
Jun 18, 2011
8
0
0
Wilmington, nc
I'm lookin at getting a mm hub adapter and before I have to go and buy a caliper to measure the hub diameter, I wonder if they have a standard hub diameter on the rollers. Do they all use the same hubs and has anyone installed a mm adapter to one already? I know that ill eventually have to get a caliper but I figured id ask first. Thanks guys