They will just not always easy to find n banggood.@Carl Wilson great minds. I have half a dozen 201 size toolpost holders in my banggood basket along with the carbide cutters @doubleboost reviewed. Banggood don’t sell the toolpost in that size though so that will come from arc euro.
The piston or wedge type as shown are the type I prefer, but both types work fine.
https://m.banggood.com/DMC-250-100-...-Change-Tool-Post-p-1208546.html?rmmds=searchIt did strike me as odd but had a good search and can see others asking in the comments against the corresponding tool holders and getting the response it’s not stocked - all a bit strange.