Generally yes, they are based on the Aloris standard. I use China holders with my Dorian & have tried various ones & the have all fit fine for me. But as said some China holders have fitment issues. From what I've seen it's mostly with piston vs wedge China tool posts but YMMV. Careful with the newer Dorian "extreme" oversized holders, those can cause problems too having to use spacers in certain applications.