Hobby-Ace Q250 FPV Racing Quadcopter Frame Kit as QAV250 (All Black Arms) Diagonal motor to motor length is 250mm and light weight 127g only. Made of nylon and glass fiber,extremely durable yet lightweight for FPV racer. 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. With PCB parallel plate, convenient for connecting other electronic device. More FPV racer quadcopter product is provided by us in Amazon.Bring your eyes into the sky and racing like a free bird, enjoy the ultimate first person view experience.