what is diameter of the wheel on this roller

A quick learner from soo, michigan says:
the part i am trying to replace has 3/4 inch wheels. And the 7/8 inch spacing on the wheels ... is that center of wheel to center of wheel or outside to outside etc (pn 23-138)?
Profile picture of Paul Sr.
Paul Sr. from SWISCO responded:
The diameter of the wheel on this roller is 3/4" and the distance from the center of the wheel to the center of the wheel is 7/8". Take a look at the picture included in this post to see an alternate view with dimensions of this pocket door roller.
Alternate view with dimensions of the 23-138 pocket door roller.
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