This is a new folding copter quadcopter designed for professional FPV system. 16mm thickness tube. Carbon fiber material. All the arm tube with standard hole, and easy to assemble. Recommend configuration(not included): Flight controller:Compatible with most flight controller board (DJI MWC,WKM,FC1212-S,FY20A/30A,MK 2.0,GAUI INS). Motor:2212/2216/2814 /4822 *4. ESC:20-30A. Propeller: HJ1238 Propeller and canopy.