The ACME 3077 is a CNC machined 4 blade Nibral propeller engineered for high performance wake and ski boats. With a 17.00″ diameter and 15.50″ pitch, it supplies firm hole?shot and smooth throttle control. Diameter: 17.00″ Pitch: 15.50″ Cup: .150″ Hub Length: 03.375″ Bore: 1.25″ Blades: 4 Rotation: Left