The Volvo Penta G3 duo-prop propeller set Nibral - 3587378 is an advanced and high-quality propeller set designed for use on ships with sterndrive engines from Volvo Penta. Following are some specifications of this propeller set: Material: Nibral, an alloy of nickel, bronze and aluminium with excellent corrosion resistance and durability. Number of blades: 3 for the front propeller and 4 for the rear propeller, providing better traction and manoeuvrability. Diameter: 15.3 inches for the front propeller and 14.3 inches for the rear propeller. Speed: 19 inches for both propellers, allowing the boat to cruise faster at a given RPM. Suitable for: Volvo Penta SX-a and DPS-a sterndrive engines rated between 200-320 hp. Advantages: The G3 propeller set offers excellent acceleration, responsiveness and fuel efficiency. The duo propeller design reduces vibration and noise, improving cruising comfort. Also, the propeller set is easy to install and maintain. In short, the Volvo Penta G3 duo-prop propeller set Nibral - 3587378 is an excellent choice for owners of Volvo Penta-powered boats looking for improved performance and reliability on the water.