Features： 1、9‑1/4x8in propeller, high thrust. With 3 blades, it can quickly cut through water, ensures low resistance during underwater propulsion. 2、The propeller blades are linked by 14pcs pure copper spline teeth, better match the engine speed, allowing your outboard to thrust faster. 3、Premium aluminum alloy, high‑density, smooth painted surface, resistant to salt and corrosion, ensure a long lifespan in harsh marine environment. 4、Higher rake angles tighten the vorticity produced by the propellers, adding to boat lift and overall performance. 5、Improve maneuvering and lift through aggressive rake and cupping. Tuned progressive pitch angles accelerate and channel water to minimize slip and increase performance and fuel economy. Specification： Item Type: Outboard Propeller Material: Aluminum Alloy + Copper Diameter: Approx. 9-1/4in Pitch: Approx. 8in Number of Blades: 3 Number of Spline Tooth: 14 Rotation: RH Fitment: For 2-1/2in Gearcase Replacement for 9.9 CT 2005 and Newer Replacement for 15/20HP 4-Stroke 2007 and Newer Package List： 1 x Outboard Propeller