The Grainger 14J789 is a 14-inch diameter, 7-blade, aluminum propeller for small aircraft. It has a pitch of 21 inches and is designed for engines up to 65 horsepower. The propeller is manufactured from heat treated aluminum alloy for strength and durability. It uses a standard aircraft prop bolt hole pattern and includes the propeller hub which allows for easy installation. The propeller provides efficient airflow and thrust for the small aircraft. With its durable construction and optimized design, this propeller is well-suited for use on many small piston engine aircraft.