The ACME 475 is a CNC-machined 3-blade Nibral propeller made for high-performance ski and wake boats. With a 13.00″ diameter and 12.625″ pitch, it delivers crisp acceleration, smooth throttle response, and consistent tracking. Diameter 13.00″ Pitch 12.625″ Cup .080″ Hub Length 02.750″ Bore 1.00″ Blades 3 Rotation Left