1、Can connect external microphone, LED, monitor, more than 50 threaded holes, enough to meet daily shooting needs. 2、There are 1/4 threaded hole, 3/8 threaded hole, cold shoe seat and other external holes of different specifications. Can be connected with external monitors, microphones, light or other accessories. 3、The cage is made of light and strong aluminum alloy. It is made of aviation aluminum to ensure the stability and reduce the shooting pressure. 4、The bottom has a number of threaded holes, can be fixed directly on the tripod, stable shooting. 5、According to the 3D modeling of BMPCC 4K model, perfect fits camera and has the camera hole position, which will not affect the plug wire/tripod connection/battery replacement. Features: Can connect external microphone, LED, monitor, more than 50 threaded holes, enough to meet daily shooting needs. There are 1/4 threaded hole, 3/8 threaded hole, cold shoe seat and other external holes of different specifications. Can be connected with external monitors, microphones, light or other accessories. The cage is made of light and strong aluminum alloy. It is made of aviation aluminum to ensure the stability and reduce the shooting pressure. The bottom has a number of threaded holes, can be fixed directly on the tripod, stable shooting. According to the 3D modeling of BMPCC 4K model, perfect fits camera and has the camera hole position, which will not affect the plug wire/tripod connection/battery replacement. Great accessory for photography lovers. Specifications: Condition: 100% Brand New Material: Aluminum Alloy Color: as picture shown Suitable for BMPCC 4K Package List: 1 x Camera Cage 2 x 1/4 Screws 1 x Locating Plate 1 x Wrench