Hirobo HI2521106 Collar 3 x 6 x 10.4  [HI2521106]

Collar for RC helicopters

This Hirobo collar is an RC-scale shaft collar sized 3 x 6 x 10.4 as stated in the product name, intended for general helicopter parts where a compact positioning element is needed. It serves as a simple mechanical stop and alignment aid in small assemblies, helping to locate components on thin shafts and maintain axial position during routine adjustments.

Installation is straightforward: slide the collar onto the target shaft, align to the required location, then secure per your model's fastening method. Avoid over-tightening set screws to prevent shaft damage and check fit before final assembly. Since this item is a generic collar, confirm shaft diameter and available clearance in your model before use.

In tuning and assembly contexts the collar functions as a precision spacer for small movements, useful during incremental setup of rotor linkages or accessory mounts. It is supplied as a single accessory unit intended for RC model-scale maintenance and alignment tasks.