Although the center is fixed firmly, when pulling the pulley horizontally, three claws are unbalanced and it is very difficult to set it. In that state I could not tighten the center screw, so I used another German puller.
I bought it for use without a pulley, but I thought it might be a little bigger. I felt a little small and managed to get rid of. I would like to buy a little larger one next time, but I hesitate because the price is a bit high.