This cage of anti-twisting and excellent heat dissipation for better shooting without making any damage to your valuable camera.It has a number of threaded holes along the top, bottom, side and front for attachment mounting. And provides 1/4"-20 and 3/8"-16 auxiliary threads throughout the aluminum alloy construction. | The cage equipped with cold shoes and multiple 1/4", 3/8" and for arri-type threaded holes can be used for accessory installation, such as magic arm, flash light, EVF bracket, handle, microphone, etc. | The cable clamp can be secured on left side of cage, provides the protection of HDMI-compatible port, not make a damage of cable plug. Reserved camera port, battery charger port, battery port, pop-up flash, MI hot shoe. Right strap port, allows to mount strap. | Camera is secured in cage with 1 screws on bottom, 2 rubber pads prevent scratching or damaging the camera. It can also be attached to for arca-stype or other quick release plates by the arrays of 1/4'' threads. | Double locking - The cage equipped with a threaded hole that matches the eyelet and secures the M2.5 screw to the eyelet to prevent the camera from deflecting and accidentally falling during shooting. NOTE: M2.5 screws are not compatible with A7RII/A7II cameras