GREAT PLANES PROP SHAFT 4 STEP STANDARD REAMER
This is a 4-step prop reamer for standard size prop shafts(American measures).
This is NOT for metric shafts. It is used to enlarge the hole on the prop
because most of the time the hole is too small to fit the engine. This is the
best way to do it because it will not split the prop and will keep the hole
perfectly centered.
It will ream holes with a diameter of 3/16", 1/4", 5/16", and 3/8".