Stainless Steal - Counter Rotation, Mercury Marine 21P Quicksilver, Laser II Sport Prop "Retails $500 - $700" Great condition. Was installed on a 175HP Mercury. Costs between $500-$700 if you can find them new. Excellent Condition, no scratches, chips or signs of wear. Part number 48-16546A41-21P Please text for fastest response... Tags: Boats, Aluminum Boats, Engine, Motor, Mercury, Marine, Offshore, Speed, Propeller, Prop, Outboard, Boating, Fishing, Striper, trophy, campion,