Replacement Arm for Reptile Martian-II 250mm Quadcopter Frame

A hard landing or a prop strike tends to take out one arm long before the rest of a frame kit gives up, which makes a frame-specific spare arm far more economical than sourcing an entire replacement frame over a single broken piece. This arm matches the Martian-II 250mm frame's exact mounting pattern and dimensions, so it drops straight into an existing build without the fitting issues a generic, non-frame-specific arm would risk.