I hope this does not date me too much, but how many know what an
Arm Blaster is and are using them?
If you are new to lifting, I think it is one of the most beneficial devices ever thought of to really teach the "art" of curling. Your lifting amount will drop big time, but the results will be dramatic (if that's what you are after).
I rarely see them in gyms and not sure why? In the 80's it was standard equipment