MVP Inertia. Cheap price fast shipping in the US. MVP says this about the Inertia: The Inertia is the grand debut of our 20mm-wing distance driver class. This class of controllable distance drivers will all have a wide weight range from 155g to 175g. This allows for an unmatched GYRO™ Push to give throwers increased control in their distance drives. The Inertia’s understable profile will allow high-power throwers to achieve consistent hyzerflips that will carry far and accurately. Its Neutral flight for low-power throwers will allow for reliably straight distance lines with accuracy.