You should just look at the website for R2 hobbies where this hull comes from.
This is a nice prop but, not sure you motor is strong enough to drive it
http://www.r2hobbies.com/eng/proddet...bp3016010_6345
Look around at the others but, remember these are 4mm bore, not 3/16"
What motor exactly is it? Dimensions, max amps, Watts?