The SmallRig Cage for Sony Alpha 7R is designed to protect the camera and provide multiple mounting options. It secures to the camera with one bottom 1/4"-20 screw and dual side locks, while multiple built-in silicone pads help prevent scratches. The cage does not block access to the camera buttons, card slot, battery compartment, or other ports. 

The cage features multiple 1/4"-20 threaded holes, 3/8"-16 threaded holes, and ARRI locating holes for accessories such as top handles (ID 4757, 3765), side handles (ID 4015, 4346), monitor mounts (ID 2903B, 2904B), and the magic arm (ID 3873). It also includes two cold shoe mounts for accessories such as a microphone or the LED video light (ID 4660). 

A built-in Arca-Swiss quick release plate on the bottom supports fast switching between handheld, tripod, and gimbal shooting. It is compatible with DJI RS 2 / RSC 2 / RS 3 / RS 3 Pro / RS 4 / RS 4 Pro / RS 5 gimbals. 

At the front, a built-in 1/4"-20 locating hole is compatible with the single rod clamp (ID 3276), allowing the use of a 15mm single rod, follow focus, and other accessories. The cage also features a strap slot for wrist straps (ID 3848, 2456), a QD socket compatible with the QD quick-release shoulder strap (ID 4118B), and a built-in double-ended wrench on the bottom for easy installation and removal.