Anyone use these axle repair bearings?

Its an 8 1/4. When I changed the seals I didnt see any wear on the axles at all. I replaced the seals when I got the car about 2 years ago (4K miles).
Yes 8 1/4 bearings ride on the axle, no race. They are lubed with gear oil. It appears the "repair" bearing is sealed on both sides and would be packed with grease.
I just wonder if the rollers are .001 oversize or std. I may just go with a standard bearing and double up on the seal if there is room for it.