SmallRig Cage for Sony A7RIII/A7M3/A7III with VG-C3EM Vertical Grip 2176B mounts to the camera's tripod socket with a 1/4"-20 screw and a second lock on the right side, preventing the camera from twisting and wiggling. It is formfitting and does not block buttons and dials around the camera. Attach SmallRig HDMI Clamp 1679 to protect the HDMI cable. Attach SmallRig Rod Clamp 1943 to set up 15mm LWS system for Matte box, follow focus and SmallRig Lens Support 2152. Around four cage corners there are openings for wrist and neck straps.