Our propellers are designed for easy installation. Material: High-quality aluminum alloy Durable construction: Made from premium raw materials with advanced manufacturing techniques and strict quality control for long-lasting performance Pitch: 11 Rotation: R Blade count: 3 Number of spline teeth: 8 Diameter: Approximately 9.25 inches Compatible with Yamaha outboard engines 9.9-20HP, including: T8, T9.9 all years F9.9 (4-stroke, 20002007) F15 (4-stroke, 1998newer) F20 (4-stroke, 2007newer) 9.9hp (2-stroke, 19842009) 15hp (2-stroke, 19842009) F15C (2007newer) F20 (4-stroke, 2007newer) Color: White Package includes: 1 x Propeller Note: Package includes only the items listed above. Other accessories are not included. Note: Lighting and display settings may cause slight variations in color between the product image and the actual item. Measurement error allowance: +/- 13 cm.