DescriptionMade of aluminum alloy for durability . Tuned vents for quick punching. Improved handling and boat lift. Good choice for Yamaha outboard. Good design, high quality and good performance light motor propeller. Specifications: Model: 9 1/4 x 10 R Type: "R" type Sample Pitch: 8 Number of Blades: 3 Number of Spline Teeth: 8 Material: Aluminum White Color Prop Rotation: Right Side: Length: Diameter: 9 1/4" Pitch (inches): 10" Decoration . For Yamaha outboard engines 9. 9-15HP2-1/2" Gearbox T8, T9.9 All years F9.9( 4 Stroke ) 2000-2007F15 ( 4 Stroke ) 1998-Update F20(4 Stroke) 2007-Newer 9.9hp(2 St roke ) 1984-200915hp(2 Stroke) 1984- 2009F15C 2007 -Newer Package includes: 1 X Marine Propeller