Most definitely will NOT fit Aloris or similar I have a similar system the brand escapes me at the moment but mine was made in Italy, and came with the lathe. This style is extremely rigid and very accurate, but there are NO knock off parts available, and the originals are very expensive, so I have replaced mine with an Aloris BXA set, Even buying genuine Aloris plus freight from US to Aus was cheaper than buying spare tool holders for the bison style, and i can now get low cost asian toolholders to fit.
He's been running that ad off and on for several months. Hasn't figured out that it just isn't worth more than an Aloris style, even if it is "better".
I have a few of these holders and an incomplete tool post. Just to test the waters I listed one of the holders on eBay with an opening of $10. No bids.