Can anyone identify this attachment please?
I expect it's a part from a T&C grinder or similar. It has a 5/16" collet frozen into the end. The locking lever prevents the collet sleeve from turning otherwis it's free to rotate. I suspect that the knurled wheel on the rear is what pulls the collet in but I cannot be sure.
Pics below or you can view the album for full size ones.
Thanks
Pete.