Maybe others already know this but passing on as FWIW. I wanted another BXA toolholder (250-201). KBC wants $70 & of course the minimum shipping dinger fee. I decided to try one through Amazon fulfilled by Accusize. Came to my door in a day for $29 delivered (with Prime). Its awesome. Fits my tool post perfectly, dog point set screws are decent, no longer throwaway, fit & finish is nicer than any previous holders I have. These seem to be getting better over time. One detail that I spotted is the corner of the shank slot is a very crisp corner. Some of my earlier ones had a an excessive fillet from the end mill corner & no corner relief. You have to pay attention with tooling shanks that dont have have generous chamfer. If you try to push them in to make contact with the side of slot, the shank can ride up the chamfer a bit which means they are not sitting flush on the bottom.