Small But Mighty The built-in 2.5inch propeller guards were designed to fly bold. You’ll experience a complete new creative freedom to fly whenever and wherever. The durable injection molded frame does not only prevent damage to your motors or propellers, but also protects the environment of small flight errors. We’ve also added a special vibration-damped camera mount to keep your raw footage as smooth as possible, as well as ensure good Gyro Data for the in-built or in-post camera stabilization. Specifications Product Name: Defender 25 O4 Frame Kit Frame wheelbase: 112±2mm Frame Dimension: L158*W155*H37.5 mm Arm Thickness: 2.5mm Top Plate Thickness: 2.5mm Max Flight Stack Height: 25.7mm(O3 Ver.)/25mm(O4 Ver.) Motor Mounting: 9x9mm-φ2mm VTX Mounting: 25.5*25.5/Φ1.6mm Weight: 90g Packing List 1 x Defender 25 Frame Kit 1 x Anti-Spark Filter 1 x Screw Bag Note Due to manufacturing processes, the thickness of our products may have a standard manufacturing tolerance of ±0.2mm. The size of the hole may have a standard manufacturing tolerance of ±0.1mm.