13mm Drill Chuck - #2 MT
Jacob Style Drill chuck 13mm chuck with no. 2 Morse taper.
Typically used in the tailstock of a lathe for drilling rotating items.
Morse Taper #2
The large end of a Morse Taper 2 (MT#2) is approximately 18mm
If your tailstock spindle has a taper and is approximately 18mm in diameter then this is probably the correct one for you.