Sorry Sals, a little complicated for me, hurts my brain looking at it.
Why not ask, what clock movement did you enjoy working on the most? I would reply, the Seth Thomas no 86 movement, i really like them.
For 15 bucks i would pass. Cheap tools dont work for me. I depend on them alot to do quality work, whether at work or at home in my shop. You get what you pay for. I would pass on the Walmart ones too.