AS6717/3 Mod Sharpened, Balanced, Polished Stock prop:  Diameter: 67mm Pitch: 114 mm Ratio: 1.7 After Mod:  Diameter: 66mm Pitch: 119mm Ratio: 1.8 The blades have been thinned and the leading edge re-shaped with a back-cut trailing edge; the tips have been worked for increased pitch and tuned for maximum performance. This prop performs well with either stock or modified engines in monos, cats, hydros and riggers