Aircraft Model(s): A36 Bonanza. Applicable Engines: IO-550-B. 1 - Polished Spinner A-2295-2P, 1 - STC Paperwork SA00719LA, 1 - 3-Bladed Propeller PHC-C3YF-1RF/F8468A-6R . 80 inch diameter 3-bladed, aluminum hub propeller.