Rotation:Right. Spline tooth:8. Fits for outboard engine:Yamaha

Propeller application:

9.9-15HP. 
2-1/2" Gearcase; 
T8, T9.9...all years; 
F9.9(4 stroke)...2000-2007; 
F15(4 stroke)...1998-newer; 
F20(4 stroke)...2007-newer; 
9.9hp(2 stroke)...1984-2009; 
15hp(2 stroke)...1984-2009; 
F15C...2007-newer; 
F20(4 stroke)...2007-newer


Please check carefully your original brand, diameter, pitch, SPLINE TOOTH before order. If you are not sure whether you order a correct one, please feel free to contact us. We usually will response within 30 minutes. Thank you.