8×1.25mm SHORT SHAFT Adapter Kit (EXTRA LONG 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 to 7/16" diameter for the body of the adapter to protrude thru the propwasher and into the propeller.
8x1.25mm SHORT SHAFT Adapter Kit (EXTRA LONG BODY).