BW&reg; F330 4-Axis Multi-Rotor Quadcopter Flame Airframe Framewheel Rack Kit for KK MK MWC 4-axis RC Quadcopter UFO 330mm FlameWheel F330 is a multi-rotor designed for all pilots for fun or AP This product is a well designed 330mm frame for RC quadcopter. The main material is glass fiber while the arms are constructed from ultra polyamide nylon. Using high strength compound PCB frame board, which makes wiring of ESCs and battery more easily. Large mounting tabs on main frame bottom plate for easy camera mounting.