This propeller is perfectly matched to the Vittorazi Fly 100evo. Since the engine is already a true classic, the options for propellers are becoming fewer and fewer. Nevertheless, we have the right solution for you. We designed this propeller in a three-blade configuration because when using the 1:4 reduction, the propeller has a relatively low rpm. This three-blade configuration combines the relatively short -GMS- profile with the low weight of the H25F series. This is the right choice for every pilot who prefers a fast-accelerating propeller despite a high reduction ratio.