2015 Laing brand new M35II steadycam vest&arm&B4sled for big camera load-bearing:6-16kg B4 sled material:carbon fiber,aluminum alloy V3 vest: It reduces pressure on the spine by distributing it to various parts of the body in a scientific way and helps photographers breath easier X-35 arm:The spring of the arm is made of piano wire,which gives it better elasticity endurance and shock absorption. *Pakage includes: 1)metal vest 2)double arm 3)sled 4)srews and accessories 5)low-mode operating bracket 6)counterweights 7)docking bracket 8)soft bag