On Wed, 22 Jun 2005 21:36:57 UTC, EricP wrote:

They were Rawl things. Still got mine and use it occasionally. Trouble
with them was getting the drill out of the handle. You banged it into
a hard wall nicely and then tried to remove it, and only then did the
bit slip easily out of the handle, leaving the bit as part of the
wall. Any other time even the largest metalworking vice would fail.

What you needed was:

http://www.londontools.co.uk/acatalo..._RAWL_457.html