Wooden Camera 280400 Battery Slide Extension for Canon BP-955 Hot Swap (RED® KOMODO™) allows either Battery Slide Pro V-Mount or Gold Mount (RED KOMODO) to be positioned further from the camera body to allow hot-swapping between brick battery and BP-955 battery.
Please note that only the Canon BP-955 battery is recommended for this configuration as larger capacity batteries may not fit properly between battery plate and back of camera.