Koolertron DSLR Camera Cage With Top Handle Grip For Camera Rig Panasonic Lumix GH3 GH4 Fits for Panasonic Lumix GH3 GH4 Camera Rig Professional design GH3 GH4 Camera Rig Standard screw thread for a tripod base plate on the bottom of the cage Material: alloy, small compact Compact design, rod system fits well with additional film equipment