He is correct, it's simply a rotary style tool holder so that you can put different cutting tools & quickly rotate it to a new or different shape tool without having to unscrew the old tool & put the new one in...
More modern systems use a quarter turn friction hold to quick change tools...
First hello to everyone out there! I'm new to the forum & this is my first post... I have a small custom motorcycle shop & do powdercoating/fabrication etc for the local dealerships etc...
I had a customer bring me this with a deer in the headlights look... Well... Now I have that same...