Mercury - Vengeance 3-Blade Stainless Steel Propeller 13.4" Diameter x 14" Pitch Right-Hand Rotation 3 Blades Stainless Steel Polished Finish 8M0151399. Overview. Every boater remembers the first time they found a prop that just felt right. The Mercury Vengeance 3-Blade Stainless Steel Propeller (8M0151399) has that unmistakable feeling-steady, smooth, and confident from the moment you throttle up. You'll sense the grip it has in the water, the easy lift onto plane, and the way it keeps your boa