SmallRig Cage Kit for Sony Alpha 7 III / Alpha 7R III 2103C is exclusively designed for Sony A7RIII/A7III. It includes 4 parts, namely Double End Ball Head 1135, A7R III Cage 2087, Safety Rail 1409, and NATO Handle 1955. NATO Handle 1955 could be mounted on Safety Rail 1409 for handheld shooting. It is equipped with an abundance of threaded holes and cold shoes for additional attachment. It could be easily adjusted forwards and backward for the balance of the rigs. Double End Ball Head 1135 comes with a shoe adapter on one end and a 1/4"-20 screw on the other end. It enables to mount of a monitor, wireless video transmitter and microphone, etc. It provides multiple choices for the cameraman based on the needs. Cage 2087 is exclusively designed for Sony Alpha 7 III / Alpha 7R III. It does not block any access to the battery compartment, ports, and slots of the camera. It fits the camera perfectly and serves anti-twist purposes. Also, it comes with arrays of 1/4"-20 and 3/8"-16 threaded holes for DIY operations.