1.3.4M long arm 2.AL-Mg alloy arm 3.Heavy-duty four-wheel dolly 4.Trailer Max load 250KG This machine is made from aviation AL-MG alloy through casting. It is light, elegant, flexible, safe, and easy to be dismantled and installed. It is an all-direction and multi-purpose shooting auxiliary device for the making of movie, TV, advertisement, MTV, and large-scene activities. Camera crane