D5mm Ball Set H=9.5 - Hirobo HI2525012, 10pcs  [HI2525012]

Replacement D5mm Ball for Rotor Linkages

The Hirobo D5mm ball kit (model HI2525012) provides ten small replacement balls for RC helicopter linkages where a 5mm ball with a 9.5mm overall height is required. These parts are useful for routine service or swapping out worn linkage joints.

Install these balls into compact control linkages or small rotating connections where a tight, low-profile joint is needed. Always double-check the mating socket and rod dimensions and confirm the retention method on your model to avoid excess play.

During maintenance, inspect each ball for flat spots, cracking or deformation and consider replacing multiple linked joints at once to preserve consistent control geometry for easier setup and tuning.