You can choose your favorite 3D printing model and color for DIY The different-sided carbon plate supports arm structure, which strengthens body's anti-twisting ability and provides space for capacitor installation The receiver compartment is reserved at bottom of rear end. Just remove bottom protective cover to easily match frequency Optimized for FPV freestyle and RC racing drones Use for 5 frame kit to upgrade your drone settings and experience unprecedented advanced flight. Perfect for amateurs and competitive racers Top Plate Thickness:2.5mm(T300 3K) Middle Plate Thickness:2.0mm(T300 3K) Bottom Plate Thickness:2.5mm(T300 3K) Arm Thickness:6mm(T300 3K) Camera Mounting Screw:7mm Battery Anti-Slip Pad:Silicone 3mm Compatible Propeller Size:Max 5.1 Inch Motor Mounting Hole Distance:16-19mm FC Mounting Hole:30.5x30.5mm(M3) VTX Mounting Hole:20x20mm(M2) / 25.5x25.5mm(M2) Internal Mounting Height:23-31mm Receiver Installation Space:25x13x6mm GPS Installation Size:18x18x7mm Colour:As Shown Material:Carbon fiber + aluminum alloy Package Contents: 1 x Drone Frame Kit Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.