I really like this design of a turret tool post, using QCT holders. The best thing about a QCTP is the speed of adjusting the tool bits to center. It was the reason I removed the turret that came with the lathe. It was always a task to find the correct shim stackup to install the tooling. But having the tool bits most used for facing, turning, and cutoff was very handy to quick fabrication of a part.
It looks like your holder is of the 'piston' style to clamp the quick change holders.
Does this have turret indexing at 45 degree?
I have both the A and D size tool post systems on my lathe. I assume I could modify my existing holders by cutting the 45 bevel to the side corners, as I have many holders, and this would not dedicate them to this turret holder.