Review on OTC 4507 Bearing Race Driver by Andrew Grant

I drove a bearing ring with this set, literally destroyed both the handle and the cup. On the other hand, both the handle and the cup are made of aluminum, while the ring and hammer are made of hardened steel. I really don't understand how this can work when everything is aluminum. Maybe for small races like trailer or small car bearings, but then why need cups for big bearings like 1 ton trucks? As for installing gaskets, the 2"x4" piece works just as well as these. Maybe I expected too much, but this set was useless for my tasks.