Our propellers are designed for easy installation. Material: High-quality aluminum alloy Outstanding quality: Made from premium raw materials, advanced manufacturing processes, and strict quality control for enhanced durability. Pitch: 11 Rotation: R Number of blades: 3 Number of spline teeth: 8 Diameter: Approximately 9.25 inches Compatible with Yamaha outboard engines 9.9-20HP: 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: The package includes only the items listed above. Other accessories are not included. Lighting and monitor settings may cause slight color variations between the product image and actual item. Measurement may vary by +/- 1-3 cm.