micky wrote:

Masonry bits. vs. Hammer drill bits

I had assumed they were the same. Maybe not?

Hammer drill bits seem very expensive. The cheapest was $4.50 and I
think that one was small. A lot are 40 dollars or more. That's more
than the drill was.

Masonry bits are intended for rotary drilling only and use cheap carbide
and other cheap materials. Hammer drill bits look similar, but use
higher grade materials to withstand the percussive forces of a hammer
drill or rotary hammer. If you put a cheap $5 masonry bit in a hammer
drill or rotary hammer it will be destroyed before it even finishes the
first hole.