The 14 1/2X21 S3R PROPELLER (5789-3145-21) PolaStorm features the innovation of aerospace casting technology for marine aluminum propellers. These marine aluminum propellers are made from sophisticated aerospace casting innovations using hybrid castings of strontium, aluminum, and titanium and have far more sturdy and robust construction than ever before. The overall fixtures are highly resistant to corrosion and durable featuring the robotically-applied proprietary anti-corrosion coating powder. The blade geometry is High-Rake. Excellent bow lift and aggressive acceleration. Ideal for engines rated between 150 and 200 horsepower. Key Features: High-quality Propeller by PolaStorm Fantastic bow lift, top speed, and momentum, with minimal slip and more bite Fully automated production stage using cutting-edge robot technology Each propeller is 3D scanned for inspection. Achieve optimum vessel performance Safeguard the dependability of your vehicle Precision-machined and rust- and corrosion-resistant coating Marine-grade components for years of service Perfectly matches and surpasses the original equipment it replaces Specifications: Brand: PolaStorm SKU: 5789-3145-21 Weight: 13.00 LBS Unit Of Measure: EA Manufacturer Part Number (MPN): 5789-3145-21 Size: 14 1/2 x 21 Rotation: Right hand Condition: Brand New in box Number of blades: 3 Quantity: 1