Mercury Bravo Two 17.75 x 21P LH Propeller 48-18617A40The Mercury Bravo Two Aluminum Propellers are manufactured specifically for Bravo Two sterndrives. These propellers are made with Mercury's unique patented Mercalloy aluminum. This unique material allows Mercury props to have thinner blades that create less drag, resulting in optimal performance and durability.Recommended Boat Types: Commercial workboat, cruiser, houseboat, runabout - cuddyFeatures: Easy to maintain and repair; Good overall performance and value; Big blades hold steady through turns and provide more thrust; Matte black; 3 Blade Die-Cast Aluminum; Specifications: Diameter: 17.75; Pitch: 21; Rotation: Counter (Left Hand); Number of Blades: 3; Material: Mercalloy Aluminum; Equipped with Flo Torq II Hub Kit; Fits; Bravo 2 Sterndrives;