Makerfire&reg; H250 3K Carbon Fiber Quadcopter Frame This H250 frame is made of 3K carbon fiber(mixer of glass fiber and carbon fiber).NOT All carbon fiber or glass fiber. Diagonal motor to motor length is 250mm and light weight 164g only. Plenty of space is reserved on multiple layers so that you can easily fit your FPV and neatly tuck away all the wires.Equipped with rubber damper to decrease vibration during flight. Customed by Crazepony team and the hole in the arm suit for MT1806 and MT2204 at the same time. More RC racing Quad-copter product is provided by Crazepony in Amazon.Bring your eyes into the sky and racing like a free bird, enjoy the ultimate first person view experience.