3 x 8 x 15 Replacement Collar HI2521128 for Helicopters by Hirobo  [HI2521128]

Shaft retention collar 3 x 8 x 15

Hirobo's HI2521128 collar is marked 3 x 8 x 15 and functions as a straightforward mechanical collar for RC helicopter assemblies. It is intended to lock or locate small rotating and sliding parts in place within the model.

As part of routine setup or repair work, the collar helps preserve the correct spacing and alignment between connected components in drive and linkage areas. Fit checks typically involve verifying the collar marking against the shaft measurements provided in the model's spare parts list.

Presented as a spare component, this collar is classed among general helicopter parts rather than a specific kit piece. Confirm compatibility with your aircraft's parts list before fitting.