The Grainger 14H399 is a 14-inch diameter, 3-blade, aluminum propeller for small aircraft. It has a pitch of 9 inches and is designed for engines up to 65 horsepower. The propeller is manufactured in the USA and conforms to SAE aerospace standard AS1055B. It features a hub with a 5/16-inch bore and is approved for fixed pitch applications. The aluminum blades allow for efficient performance while remaining corrosion-resistant. With proper engine matching, this propeller provides smooth airflow and optimal thrust for light recreational aircraft.