From Redrock Micro…
The Rhino Mount is a lightweight mount that allows you to mount 15mm accessories to your camera’s hot/cold shoe.
Use with smaller handheld rigs and cameras or when space and weight are a premium so you can add 15mm accessories, especially our microRemote Torque Motor. Use with any camera with a cold/hot shoe to lighten the load.
Gimbal users: Use this mount to attach remote motors without adding weight. Mounting the motor on top of the camera can aid in gimbal balancing in most situations.