Performance Improvements: Exceptional planing off time Virtually no cavitation in turning Little ventilation in rough seas Increased speed and fuel economy during mid-range cruising High polished stainless steel finish Cupped blade design Rotation: Right and Left The Signature ML500 is the ultimate workhorse propeller. Designed for big load caring offshore boats, this propeller really works hard to get you where you need to go. Spend less time at the pump and more time on the water.