I don't need something with too much power. The hammering action could break my tool attachment. After careful selection, I chose this for the best estimated cost & function combination: Parkside 2 -speed Corded Power Drill
Impact drivers do not use a forward hammer action.
They use a rotational "hammer" action. There is a "hammer and avil" in the body that whacks the drill bits from the side to force it to turn with more torque.
Sorry not the best of explanations. The following explains it better than I can
Impact Drivers: How they Work and How to Use them
www.protradecraft.com
I have had a Metabo 12v impact driver for over 2 years and used it recently for the first time to remove screws used to fix posts to a brick wall. It removed screws that the 12v drill struggled with.
I have no idea if an impact driver would harm your attachment. I don't see why the rapidly stuttering torque would, but, like I said, I don't know.