The harmonic balancer puller is home made,it's made from 9/16 plate.
The cheap professional ones have snapped when the going gets tough.
I was using a high tensile unf thread that was about 15/16 in diameter but that stripped .the thread at least 3 times
so I just use a coarse thread that pushes against the nut.
When the coarse thread gets too worn on the bolt it will be replaced as I have a few spare.