There are two of these. The ones from the 2007 KOP and the new model. Both are legal COTs. Make sure if you are using cad files from the 2007 KOP you get the right ones from banebots:
http://banebots.com/pc/Closeout/GP-56012 (the ones from 2007)
Banebots now normally sells their new model:
http://banebots.com/pc/P80K-nnnn-0005/P80K-43-0005
Both are legal and almost the same aside from a few differences. The CIMs mount differently and the output shaft on the old one is longer.