The empty frame is made of high quality 3K carbon fiber , with the aluminum and connecting fittings made by CNC.It has the folding design,can be easily carried for its appearence like a piece of A4 paper. The wheelbase is standard X shape with 680mm. The inner space is huge with 85x24.5mm and the height is 22mm. It weights 476g,and 4mm-thickness aluminum alloy motor base not included. After several tests this frame comes with high flexibility and resistance to fall off. Aerial fhoto gimbal is installed with integral front suspension.Users can flexibly adjust the battery installation position according to gravity center.