Helicopter Shaft Collar 3 x 8 x 15 HI2521128 by Hirobo  [HI2521128]

Collar for RC helicopter 3 x 8 x 15

This Hirobo collar carries the HI2521128 code and the 3 x 8 x 15 marking. It is a compact general-purpose part for RC helicopter assemblies, intended to secure or locate small rotating and sliding elements within the model.

In practical setup and tuning, the collar helps maintain positional stability between mating drivetrain or linkage parts. Installers usually verify compatibility by matching the 3 x 8 x 15 dimensions to the model's shaft or linkage, then fit and secure the collar following the original assembly method.

Offered as a spare for routine maintenance or minor adjustments, this item sits in the general helicopter parts category rather than a specific kit. Always check your model's spare parts list to confirm fit before ordering.