Quote Originally Posted by Ross77 View Post
Thanks Robin. HT ? high tensile?
10mm wide. Approx 30mm high. What do you mean twist fit :question:
High tensile, yes.

No extra space in a knock out slot to twist into, they are cut to fit the taper tang.

Hopefully you will have room between the spindle nose and the chuck so you can slip a fat spanner in the gap to lever it out.

OTOH you can cross that bridge when you come to it