Enertia Eco (16 x 22") Mercury LH Propeller, 48-8M0151260The Enertia Eco propeller was created with an innovative design specifically to provide optimal fuel economy and performance at cruising speed the engine rpm range where boaters spend most of their time. It features a broad 16 inch diameter design, with an extra large blade area and a high progressive rake for increased bow lift. Compared with some popular propellers used for similar applications, the Enertia Eco prop can provide up to a 10%