The ACME 3791 is a CNC-machined 4-blade Nibral propeller crafted for enhanced performance in edge-case watersports applications. With a 15.00″ diameter and 14.25″ pitch, it offers solid low-end bark and stable tracking. Diameter: 15.00″ Pitch: 14.25″ Cup: .120″ Hub Length: 03.125″ Bore: 1.25″ Blades: 4 Rotation: Left