It is designed to optimize performance, durability, and comfort. These two 3-blade propellers have slim blade profiles, which allows them to provide the highest level of precision, performance, higher top speed, great acceleration, and greater strength versus a comparable aluminum propeller. Its high-standard stainless steel adds corrosion resistance and excellent durability. Key Features: Type FH has helical (spiral) splines. Type F has straight splines. Corrosion-resistant and has an excellent strength Three-blade rear propeller and three-blade front propeller It has patented blade geometry, a large active propeller diameter. The galvanic isolation covers the drive from corrosion caused by the propellers. Its shock-absorbing rubber bushing decreases vibrations and stress on the drivetrain. Enhanced acceleration and top speed Specifications: SKU: 3885839 Weight: 40.75 LBS Material: Stainless Brand: Volvo Penta Condition: Brand New Number of blades: 3 and 3 Rotation: Left Hand (LH) and Right Hand (RH) Position: Set Diagram Reference Number: 1 Duoprop Type: FH3 Volvo Penta Exploded view / schematic Duoprop Propeller, Stainless Steel, FH Series