6×1.0mm SHORT SHAFT With 6mm BUSH.
Some Engines have a Crankshaft that is just too ?Short? to mount a spinner properly. This Adapter will correct for the ?Short Shaft? problem.
In order to allow this Adapter Nut to protrude into the prop you must Ream Out the front of your prop just a little.
6x1.0mm SHORT SHAFT With 6mm BUSH.