Fathom Camera Cage One is designed for mirrorless cameras such as the Panasonic GH5/5S, GH4, GH3, S1, S1R, S1H, Sony A7S I/II, A7III, A7RIII, Nikon Z6/Z7, Canon EOS R, Black Magic PCC4K, PCC6K Fuji X-T2/3, and DSLR cameras such as the Canon 5D II, III, IV.  Giving you a multitude of NATO rail attachment points, as well as numerous 1/4" and 3/8" tapped holes.  Rock solid camera-to-cage attachment via the camera's 1/4" tripod hole and flash shoe with a shoe mount that's adjustable on 3 axis, plus repositionable anti-twist pins to accommodate a variety of cameras.