Replacement Propeller, Propeller Dia. (In.) 30 in, Bore Dia. (In.) 5/8 in, Bore Dia. (mm) 15.87 mm, Pitch 12 Degrees , Rotation CW Facing Discharge, Number of Blades 3, HP 1/2 hp, RPM 1100 RPM, Blade Material Aluminum, For Use With 6ALE9D, 6ALF1D