It is made of aeronautical aluminum and CNC precision machining. It is robust and durable, light and easy to use; cavity design, a number of 1/4inch -20 & 3/8inch -16 threaded holes, ARRl locating hole and a bulit-in cold shoe mount for microphone, LED lights or the monitor bracket mounting. The bottom of the cage has anti- pads and anti-deflection design to protect the camera from scratching and movement. It also built in 1/4inch-20 screw holes on the bottom to attach the camera to tripod. The bottom is 38mm wide sliding standard for Arca-style plate design, which can be quickly installed on tripod ballhead compatiable with Arca Standard. It would not block any buttons and interfaces of the camera or the installation of the battery, and providing different DIY possibilities for the camera accessories attaching. Colour:black Material:Aluminum alloy Package Contents: 1 x Camera protective frame Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.