Two things you should know...

1 - Before using that prop, scrape all 3 edges (Leading edge, trailing edge and tip) with a knife or razor blade (SCRAPE, not cut) to remove the "Flashing" that was left by the mold. The flashing is VERY sharp and even casually flipping the prop can slice your fingers to ribbons if you don't scrape it off.

2 - The spinner will work fine on the Boomerang, but just so you know, you will probably need to open the prop holes a little with a file or a dremel tool