Diameter13.00″Pitch11.00″Cup.080″Bore1.00″Blades3RotationLeft ACME 917 is a CNC-machined 3-blade Nibral propeller designed for ski and wakeboard boats. Featuring a 13.00? diameter and 11.00? pitch, it offers smooth acceleration, reliable performance, and efficient power transmission-ideal for recreational and ballast-heavy setups