I bought this is as part of a package of extras from a turner and there was nothing that it would screw into in the group of items. It has male threads. It seems it would screw into some adapter either on the headstock or onto an adapter that goes in a chuck but there is no brand at all so I'm just looking for answers.
The front width is 2" and the back threaded area is 1.58".
It appears to be well made.
Thanks for any help.
Jim