It's not often I'm really impressed with something but these sticky
ball screw case back openers are trully amazing.
As a long time repairer of watches I've accumulated a fair selection of
case back openers but this thing takes the prize, it safely removed the
gunged up back from a Tudor Oyster which was tightened to the gasket
full torque and hadn't been removed in years.
I'm amazed that something which looks like a dogs toy can work so well
and if everybody had one of these then ugly gouges on the case backs
would be eliminated....and they're so cheap, delivered from China for around £6.00...I thought these would be no more than a novelty but
they really do work, even on very tghtly clamped down casebacks.