This set contains a new resin prop and spinner to replace the kit items in the Revell kit or any 109 from the F-4 through the G-14. Barracuda resin spinner is very accurate in shape and detail. The misshapen kit blades are replaced with very accurate resin versions which will make a big improvement in the look of your finished model. Easy to install. Can be adapted to fit the Hasegawa and Trumpeter kits as well.