Features: Precised mold: The component is high precised in mold opening and is perfectly pair with the fixed holes of the gimbals shaft and motor, avoiding gimbals shaking or motor resonance abnormalities after assembly. Lightweight composite material: The lower shell adopts PC structure, which is lightweight while maintaining impact strength. Heat dissipation: The lower shell is pre installed with a heat dissipation air duct guide grooved slot to ensure that the heat dissipation efficiency of the ESC electronic control board and battery compartment is consistent with original factory, avoiding overheating and performances degradation. Optimization of drop resistance and protections performances: Quality material, lightweight and durability, with excellent performances. Unique design: The edges adopts R-angle transition design to reduce stress concentration during falling, and it is not easy to produce debris splashing after collision. Specifications: Material: ABS, PC Type: Upper Shell, Lower Shell(optional) Size: upper shell: 13x5x4cm/5.12x1.97x1.57inch, lower shell: 12x7x2cm/4.72x2.76x0.78inch Applicable model: for Flip UAV Package Includes: 1 Piece Shell Component note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.