ARRI Bridgeplate BP-8
The BP-8 with 19mm Rods is compatible with a lot of ARRI cameras (ARRI FLEX, ARRICAM, Alexa Studio, Alexa M) but also with Sony or Phantom cameras.
The bridgeplate can also be attached to other cameras (Alexa, Alexa Plus, RED Epic/Scarlet) with an adapter.
The BP-8 helps to optimize camera's balance when combined with the range of ARRI bottom plates.
You can also purchase this product at PhotoCineShop