All parts are just camera accessories and when its build it looks and works like a professional cage and you have extra mounts to mount more accessories and able to hold it as a fig rig and more. And its affordable as the basic version is only 35USD and all parts can be ordered from Ebay
Parts list: 2x $10 Dual Camera bracket - http://goo.gl/b2Lj2z 2x $6 Sponge Camera grip - http://goo.gl/BdgsTK 2x $1-2 Hot shoe adapter - http://goo.gl/epdoXk
Optional: $10 Manfrotto 323 quick release - http://goo.gl/LGxi3L $4 Ballhead for top handle - http://goo.gl/CALJCL $1 1/4" Bracket screw - http://goo.gl/Dx6P71
Watch this link for more info and how to build it up and also why you would need it and what extra use there is for it.