Rockmeister
pfm Member
A T bar driver might be best (I'm guessing) since you want a lot of torque. Very short shaft too. But as an alternative a gunsmiths screwdriver is the design you need....non tapering head.
https://www.workshopheaven.com/nare...MI38GwhMCZ8gIVm-7tCh03xQjXEAQYBCABEgIQl_D_BwE
https://www.workshopheaven.com/nare...MI38GwhMCZ8gIVm-7tCh03xQjXEAQYBCABEgIQl_D_BwE