About this item This is a DIY 250 Quadcopter kit, it is unassembled. Tip:The 2S battery is better for 12A/20A esc, the 3S batter is too strong and easy to burn the esc. 1.5mm Carbon Fiber fuselage－achine arm 3.0mm This is a Unassembled Mini 250 size FPV quadcopter frame kit, it's a stable system of flight for smooth flight, that it is very good for new starters, also suit for senior player to professional DIY. cc3d has changes, new and old models are shipped randomly.