Mercury - Black Max Propeller 9" Diameter x 10.5" Pitch Right-Hand Rotation 3 Blades Aluminum Glossy Phantom Black Finish 828158A12. Overview. Once you've been boating a while, you learn it's not about the flash - it's about the gear that works when you need it to. The Mercury Black Max 3-Blade Aluminum Propeller is one of those dependable standbys you can count on every time you launch. It's smooth, balanced, and built to give small outboards a clean push through the water without any fuss. Whe