This item is available for Preorder and will be shipping in March 2015.

DJI Ronin Weight Balancer / DJI Ronin Counterbalance
This DJI Ronin Weight Balancer is used for adding counter weight when installing a camera with a long lens, follow focus making the setup front-heavy.
When balancing the Ronin, it requires the camera to be moved back for balance. If the camera is already moved as far back as physically possible, the next thing to do is adding more weight to the back of the camera. There are mounting holes on the Ronin to add this counterweight setup.
Three separated weight blocks are included in every package.
 

Application scenarios:
Heavy or long lens;
Using extended arms B or C