Mercury/Mariner/Mercruiser Black Max three blade aluminum prop, 16" x 13", including the Flo-Torq II Hub Kit. More than just an aluminum propeller, the Black Max is the best three-blade aluminum prop available anywhere. And anywhere is usually where you'll find it. Whenever you need good overall performance, Black Max is there. High quality die-cast three-blade aluminum in an attractive Phantom black finish. Durable and easy to maintain and repair. Equipped with Flo-Torq II hub system for the high horsepower outboards and stern drives. Designed to fit Mercury/Mariner 135, 150, 175, 200, 225, 250 HP outboards and Mercruiser Alpha and Bravo One under 400 hp (3.0L, 4.3L, 4.3LH, 4.3L EFI, 5.0L, 5.0L EFI, 5.7L, 5.7L EFI, 350 MAG MPI. These are all right hand rotation props, Left-hand rotation (counter-rotation) props are not available in aluminum.