If spotted by one - these are modified aftermarket shafts - modified because way too heavy... Had the solid shafts drilled, but not all the way through like the original ones, and with less a big hole, and drilled holes in the flanges. Last, I had the shafts themselves grinded down, as I found out they were too oversized for the dimension of the bearings - except for that, both shafts had a different diameter too...
Seen their cost, the grinding I as a customer should not be supposed to do. And to be honest, not a lot of parts I bought stayed unmodified because of a bad fit Good thing so much parts are still made and available, but the quality should improve!