FEATURES: • Optimized Active Contours with sonic flow nozzles • Porting Taper and Upstream Bore with Velocity Stack • Greater Discharge Coefficient of Plate/Blade interface • 16 Ra Microinch, Diamond Polished Surface Finish • Shaftless high-pressure side of the blade for Larger WOT Flow Area (91 mm Effective Bore) • Self-Cleaning Throat/Flow Gap • Dome and Thread-locked Screws • Dimpled shaft trailing edge