Key Features: 1.The First cage designed for Nikon D850 in the market; 2.5 mounting interfaces (NATO rail on both sides, a built-in cold shoe on the top, multiple 1/4’’-20, 3/8’’-16 threaded holes and Arri locating holes) for accessories such as monitors, microphones and lights; 3.Built-in Arca Swiss QR plate with 1/4’’-20 and 3/8’’-16 threaded holes on the bottom; 4.Wrist strap openings for safe handheld shooting; 5.Form-fitting design with unobstructed battery & SD card access.