This cage frame is specially designed to get the battery cover avoided from covering up by the cage It comes with a quick release NATO rail on the top, you can effortlessly attach or detach a handle or some other devices through it Plenty of 1/4"-20 mounting points all the cage frame for attaching more accessories The frame's available height is 71mm, applied mainly for Sony Alpha A6600/A6000 / A6300 / A6500, Eos M , and some other small-sized camera models It’s made of high quality aluminum alloy, CNC-milled. 91mm x 91mm in size