Allowing you to add balance for the Osmo Mobile 6, OM5, OM4, SE or Osmo 3 gimbals. The DJI Osmo Gimbal is currently able to take a certain load capacity with light accessories attached to the iPhone. However, when heavier gear or large size iPhone models get attached to it, the gimbal cannot balance. Counterweights enable heavier gear to be mounted on the iPhone when filming content.