Item ........................ I am not sure what this is really, but it looks like a machine part, if anyone out there knows for sure what this is or what type of tool or machine it goes with please let me know, Thanks!!
Manufacturer ....... Unknown
Model ..................... X-104495
Size ......................... The main centering section near the threads is 25mm
The large end with the Flat measures 2.000" exactly
The threads are 5/8"-11 right hand
Overall Length is 2.760"
The diameter of the round piece next to the nut that has the two little drive lugs on each side is 1.253"