E-Flite BLH7715 3D Propellers (4): 200 QX

The Sport Propellers will allow for inverted flight while the 3D Propellers will allow for more advanced maneuvers while inverted.  Like all performance upgrades there is a compromise to be made.  Using the 3D Propellers with more advanced maneuvers will cause the battery to drain faster yielding shorter flying times with the stock battery.