Mercury - Mirage Plus 3-Blade Stainless Steel Propeller 15.5" Diameter x 17" Pitch Left-Hand Rotation 3-Blade X7 Stainless Steel Polished Finish 8M0151303. Overview. Every boater knows that perfect moment when the throttle opens, the bow lifts, and the water seems to peel away beneath you - that's the Mirage Plus feeling. The Mercury Mirage Plus 3-Blade Stainless Steel Propeller ( 8M0151303) is built for that rush, for the kind of boaters who crave speed, precision, and balance in equal measure.