The ACME 653 is a precision-engineered 3-blade Nibral propeller built for ski and wakeboat setups. With its 13.00? diameter and 11.50? pitch, it offers a perfect balance of hole-shot responsiveness and top-end cruise, delivering smooth and efficient performance for a wide range of watersports conditions.Part: 653Blades: 3Diameter: 13.00″Pitch: 11.50″Cup: .060″Hub Length: 2.750″Bore: 1.125″Rotation: Left-HandMaterial: NibralManufacturing: CNC MachinedMade in USA