I found a dirt-cheap dual Procunier tapping head; it's a dual tapping head that comes with at least 2 collets.

Before I buy it, I'd like to know if I can use it to thread only one hole at a time? From what I figure from the docs I found on procunier website (series 32000 manuals) the head seems to have a single input shaft, dual clutch (so 2 outputs, completely independent from each other). The drawings weren't that clear, though.

I plan on making a tapping machine from this and a small drill press.

Thanks!