found at DigiDirect
Add accessory mounting and protection for your Sony aR V, a7 IV, or a7S III mirrorless camera with this lightweight SmallRig Rhinoceros Basic Cage Kit for Sony Alpha 7R V / Alpha 7 IV / Alpha 7S III 3708 includes a formfitting camera cage, an HDMI cable clamp, and a top handle with a 3/8-16 anti-twist mount. The components are made from durable aluminum and carbon fiber, making the rig even more lightweight and corrosion-resistant than aluminum-only cages. An Allen wrench is also included to tighten the screws.
The cage features a 1/4-20 camera screw, multiple 1/4-20 and 3/8-16 ARRI-style accessory threads, a side NATO rail, a QD socket, and strap slots. It maintains access to the camera's controls and hot shoe, and it offers a variety of mounting options. The HDMI cable clamp protects your HDMI cable from pulling or disconnecting. The top handle provides an additional shoe mount and mounting threads.