"W. Watson" wrote


That end has the teeth.
The top has a hole for the bit, and two small holes to either side. I have
a suspicion that the two small holes are for a tool to help unloosen the
nut holding the bit.

The two holes are for pushing out the piece removed from whatever you were
cutting.

In the past, I'm sure I used a wrench on the nut and held the cutting tool
with a pliers. Not so easy this time.

Easy or not, mine works just this way.