Pinion:
https://sdp-si.com/eStore/PartDetail...upID=591&Qty=1
Look here for the spur:
http://www.qtcgears.com/RFQ/default....rs/KHK064.html
Part number SSA1-60. The bore is 10mm but the tech lady said there was enough material there to drill the bore out to 12mm.
QTC doesn't have anything with a hub & set screw