1、3 Blades: The new aluminum alloy propeller has 3 sharp blades, and the blade section has almost zero resistance when propelling underwater, which can quickly cut through the water and advance forward. 2、14 Teeth: The connection of the propeller blades is linked by 14 spline teeth. The spline teeth are forged from high density pure copper, which can better match the speed of the engine, so that your ship can move faster. 3、Salt Resistant: The surface of the propeller has been painted and brushed, the surface is extremely smooth and clean, and has the characteristics of salt resistance and long‑term durability. Even if it is immersed in seawater for a long time, the propeller blade will not be damaged. 4、Prop Size: 9.25in diameter (23.5cm) x 11in / 28cm pitch, positive pitch benefits from normal bow lift allowing the use of larger diameter propellers, while negative pitch provides additional blade strength for very high speed applications. 5、Advanced Technology: Cupped blades are a technology used to improve propeller performance under specific conditions. Cupped propeller will exhibit very high efficiency at high speeds and minimize cavitation under heavy loads. 6、Great Performance: Boat prop is designed from OEM blade geometry with proper cupping and camber added. Excellent bow lift, acceleration and top speed plus reduced slip and increased bite. Item Type: Outboard Propeller Material: Aluminium Alloy + Copper Diameter: Approx. 9 1/4in / 23.5cm Pitch: Approx. 11in / 28cm No.s of Blade: 3 No.s of Spline: 14 Tooth Rotation: Right Application: After sale replacement parts, used to replace the original propeller blade, restore the propulsion performance of outboard machine to a new state Fitment: Replacement for Mariner Outboard Engines 9.9-20hp 9.9hp(Bigfoot)...2005 - Newer 9.9hp(Command Thrust)...2016 - Newer 15hp(4-Stroke)...2007 - Newer 15hp(Pro Kicker)...2007 - Newer 20hp(4-stroke)...2007 - Newer Replacement for Tohatsu, Replacement for Nissan Outboard Engines 9.9-20hp 9.9hp (MFS9.9, 4-Stroke)...2000 - 2003 9.9hp (NSF9.9, 4-Stroke)...2000 - 2003 9.9hp (2-Stroke)...1985 - 1997 15hp (MFS15, 4-Stroke)...2000 - Newer 15hp (NSF15, 4-Stroke)...2000 - 2015 15hp (15D2 2-Stroke)...1998 - 2000 15hp (2-Stroke)...1985 - 1997 18hp (MFS18, 4-Stroke)...2001 - 2008 18hp (NSF18, 4-Stroke)...2001 - 2008 18hp (18E2, 2-Stroke)...1998 - 2001 18hp (2 Stroke)...1985 - 1997 20hp (MFS20, 4-Stroke)...2007 - Newer 20hp (NSF20, 4-Stroke)...2007 - 2015 1 x Outboard Propeller