Fotga ABS Plastic Basis Matte Box with 15mm Rail Rod Clamp Sunshade for Beginners Rail Rod Rig System Camera Cage Canon 5D 6D 7D Mark II III IV Fuijifilm X-A3 X-T10 X-pro 2 Panasonic GH3 GH4 GH5 etc Matte Box is made of mostly plastic,partial aluminum(the rod attachments are metal) and ABS material.It's powerful and stable,suitable for beginners Easily to be upgraded, International standard, it fits the 15mm / 0.6in rig system (rail center to center distance: 60mm / 2.4in) It is suitable for lens from 43mm to 77mm / 1.7 - 3.0in and itself can be adjusted to keep level with the camera Easy assembling and disassembling. Lightweight weight with 216g Suitable for All DSLR SLR cameras and camcorders,it's a good kit for your hobby activity and lessons study