FS: PowerCranks 170mm or 190mm

Hi,
I am interested, but I am not a technical expert. I need somthing like shimano octalink …

I am interested in the regular model 4’s. Could you send a picture of them? From your description, it sounds like they have 2 sets of holes in them–one at 170 and at 190. Did Powercranks replace the clutch? Is the added 170 drilling perfectly accurate? I can use the 110 or 130 setup. Thanks.

Interested in the model 4, what is the BCD on these - and 165-175? does this mean I can run them at 170?