1. FACTORY DIRECT SUPPLY, OEM GRADE QUALITY. Our propellers make your installation process easier. 2. Model Description: OEM performance for Mercury/Tohatsu Outboard Engines 9.9-20HP 3.Size & Material: 9.25 Diameter ; 14 Tooth Spline ; Right Rotation; 3 Blade ; Black Color; adopt High Quality Aluminum material 4. Outstanding Quality: Based on fine raw material, superb manufacturing process and strict quality control, our propellers are more durable. 5. After-sale Promise: If the products have any quality problems, we can offer unconditionally return. Note: If you know your propeller's Diameter, Pitch, Tooth and Rotation, then you can feel free to order. 
If you are not sure about above, please find below application list, if your engine's HP and the year it produced both appear on the list, then you can rest assured to buy.

Fit: Tohatsu outboards 9.9-20HP
9.9hp(2 stroke)?1984-newer
9.9hp(4 stroke)?2000-2003
12hp?1985-1988
15hp(2 stroke)?1985-newer
15hp(4 stroke)...2000-newer
18hp(2 stroke)...1985-newer
18hp(4 stroke)?2001-2008
20hp(4 stroke)...2007-newer
MFS9.9/15/18/20;MSFMFS9.9/15/18/20

Reference No. &  Size
3BAB64516-1   9.25x8
3BAB64518-1   9.25x9
3BAB64521-1   9.25x10
3BAB64524-1   9.25x11.5

14 tooth/ spline