The Grainger 16X454 is a 16-inch diameter, 4-blade, aluminum propeller for small aircraft. It has a pitch of 54 inches and is designed for engines up to 200 horsepower. The propeller is manufactured from heat treated aluminum alloy for strength and durability. It uses replaceable brass bushings and an aluminum hub barrel. The propeller blades can be adjusted from fine to coarse pitch using the supplied spinner nut wrench. Overall, this propeller provides efficient airflow and thrust for many small piston-engine aircraft.