Although it seemed not to be used for lathes, it can be used without problem for work holding with a lathe. I think that it will be saved if it can be bought cheaply in a set because it is a thing with several pieces of size.
Purchased to grasp the workpiece rather than the end mill with 3 chucks. Although it is divided into three in the image, in reality it is not usable in six divided from both sides ... I hope things that are not common images if possible.