Air flow plates: The ventilation or anti-cavitation plate stops the propeller from ventilating or sucking in air, reducing cavitation and guaranteeing reliable drinking water movement. Interior hub: The sacrificial composite Middle between the hub and the splines that safeguards the drivetrain in the event the propeller strikes a tough item. https://martinuqacq.wikigiogio.com/822899/5_easy_facts_about_motors_sale_for_outboard_described