what is this tool holder for

[bassmastrbw96]

bought a new box the other day and this tiny thing was in it what is it and whats it worth

[Kevin Taylor]

Look's link a BT35 but the ret knob nut is too big What is the major dia of the taper that will identifie it BT35 should be aprox 1.5" the machinery handbook has the print's of spindel taper's in it Good luck Kevin