Hirobo HI2521106 Collar 3 x 6 x 10.4mm for RC shafts  [HI2521106]

Compact positioning collar

The Hirobo HI2521106 is an RC-scale shaft collar sized 3 x 6 x 10.4 as shown in the product title. It suits small helicopter components where a neat locating element is needed, providing a simple stop and alignment point to retain parts on narrow shafts.

Fitting is simple: slide the collar onto the shaft, move it to the chosen position and secure with your model's fastening method. Do not over-tighten set screws to avoid shaft damage and always check clearance before finishing the assembly. As a generic collar, confirm the shaft diameter and available space in your model beforehand.

For assembly adjustments this collar works well as a reliable spacer for fine movements, useful when trimming rotor linkages or adjusting accessory mounts. It is supplied as a single replacement part for RC model maintenance and alignment work.