8×1.25mm SHORT SHAFT Adapter Kit (Std. Body).
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.
8x1.25mm SHORT SHAFT Adapter Kit (Std. Body).