Arbor, Blank 3MT Drawbar

This arbor has a soft end which can be machined to suit your purpose.
The arbor has a case hardened 3 Morse taper shank and is threaded for a 3/8-16 NC drawbar.
The machinable end is 1.5" long and 1.5" in diameter.

You might need to a make or purchase a drawbar to work with these tools.