Notice: Comes unassembled. Need build by buyers. Specifications: Brand: iFlight Model: F4X / F4D Frame wheelbase: 184.8mm (Squashed X) / 185 mm (DeadCat) Frame Dimension: L148.5*W110*H36 mm (Squashed X) / L149*W110*H36 mm (DeadCat) Frame Body Dimension: 36mm Arm Thickness: 4mm Bottom Plate Thickness: 3mm Top Plate Thickness: 2mm Upper Plate Thickness: 3mm Maximum Flight Stack Height: 23mm Max VTX Height: 23mm Flight Stack Mounting: 20*20/桅3mm VTX Mounting: 25.5*25.5/桅1.6mm Motor Mounting: 12x12mm/蠁2mm Weight: 163grams Features: Enhanced Camera Mount: Features a camera mount with TPU damping inserts, offering a wider field of view for an unparalleled FPV experience. Optimized for DJI O3 Air Unit: Side panels are engineered to snugly fit the DJI O3 Air Unit in the back, ensuring seamless integration and maximum functionality. Dual VTX Antenna Support: Comes with a dual 5.8G VTX Antenna TPU mount for enhanced video transmission quality. Robust Construction: Incorporates the latest Nazgul frame upgrades for maximum durability, featuring 4mm arm thickness and sturdy plate construction. Flexible Customization: Offers optional parts like the Anti Spark Filter, which can be added to further protect against voltage and current spikes during battery plug-in. Package Included: 1x Frame Kit 1x TPU Set 1x Screw Bag 2x Anti-slip Battery Pad 2x Battery Strap