please help identify

[cpttuna]

I found this item in the drawer below my dad's drill press. I have no idea what it is and was going to pitch it. maybe someone here can id it or wants it?

 

[tool_scrounge]

Micro stop countersink for aircraft maintenance use

 

[cpttuna]

Micro stop countersink for aircraft maintenance use

thanks

 

[cvairwerks]

FYI...they're 49$ new.

 

[cpttuna]

FYI...they're 49$ new.

anyone want this one?