Aluminum propeller. Information: 3 aluminum blades, Diameter: 7.8″, Pitch: 8″, Splines: 12. For Tohatsu outboards: 4-stroke – • 4 hp – MFS4A2, MFS5A2, MFS6A2 (2002>) • 5 hp – MFS4B, MFS5B, MFS6B (2006>) • 6 hp – MFS4C, MFS5C, MFS6C (2012>); 2-stroke – • M4C, M5B (2003>) • M4C, M5B (2006>). For Mercury/Mariner outboards: 2-stroke, NOTE! Japanese made models only (Tohatsu based) – • 4 hp (1987>) • 5 hp (1987>); 4-stroke – • 4 hp (1999>) • 5 hp (1999>) • 6 hp (1999>).