BW&reg; DJI F550 6-Axis Multi-Rotor Hexacopter Frame Airframe FlameWheel Set with Integrated PCB Board (Red + White) DJI F550 Hexacopter basic frame wheel kit Using high strength compound PCB frame board, which makes wiring of ESCs and battery more easily. Made by advanced engineering material, super strong & smooth Kit (need assemble by yourself ). Compact design with small numbers of components, you can assemble it by youself quickly and easily. F550 is a multi-rotor designed for all pilots for fun or AP. With DJI WKM or NAZA autopilot system, it can achieve hovering, cruising, even rolling and other flight elements. It can be applied for entertainment, aerial photography, FPV and other activities.