Aircraft Model(s): TB20, TB21. Applicable Engines: IO-540-C4D5D, TIO-540-AB1AD. 1 - Polished Spinner A-2295-3P, 1 - 3-Bladed Propeller HC-C3YR-1RF/F7693F(B), 1 - STC Document Set SA01192CH. 78 inch diameter 3-bladed, aluminum hub, scimitar propel