This is an RC-scale tail boom holder labeled HI0302010 from Hirobo designed for SRB tail assemblies. As a dedicated tail boom holder, it serves as the mounting interface that helps position and retain the tail boom relative to the airframe on SRB-series RC helicopters.
In practical terms, this part is intended as a replacement or service component for models using the SRB tail architecture. It interfaces with the existing tail boom and tail boom support points, and is used when an original holder is worn, damaged, or when routine maintenance requires swapping hardware to restore correct alignment.
Installation considerations: verify alignment of the tail boom and the holder before final tightening, use the correct size hex driver and matched fasteners, and avoid overtightening to prevent stress on adjacent mounting points. During setup and tuning, the holder's role is to maintain consistent tail boom alignment, which supports predictable tail rotor geometry and control response.
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