Anyone use these axle repair bearings?

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It looks like a 9 1/4 repair axle bearing.
Doesn't an 8 1/4 also have the bearing ride on the axle?
Correct. Here are the 8.25 axle bearings and seals from Dr Diff. They are similar to the GM stuff that uses the axle as the inner race. I have replaced many bad axles in 8.25s.

8.25" Chrysler axle bearings