Experience the advantage of the Stiletto Advantage III Performance boat propeller, designed to deliver exceptional efficiency and power for your marine adventures. With a robust 14 1/2 x 21 x3L blade configuration, this propeller is engineered to enhance your vessel's performance across various water conditions. The ST18221 model is a testament to Stiletto's commitment to quality and durability, ensuring a reliable and robust operation. Ideal for a range of applications, this propeller is the perfect upgrade to maximize your boat's potential and enjoyment.