Solas Amita 3 Propeler: Mercurio, Mariner, Mercruiser - Aluminum (1311-114-12) Traditional rubber hub. Aluminum propeller with three blades. Exclusive Solas casting process. Wide blade design specifically for 4-stroke engines Excellent acceleration and high speed. Item Description: 11-3/8 x 12. Manufacturer Part Number: 1311-114-12.