This Hirobo replacement pack provides 10 EX D5mm ball with stand components designed for small-scale RC helicopter linkages and routine maintenance of control connections. The set is intended as a multi-piece service kit to replace worn ball joints found in rotor and control link systems.
Purpose and function: the D5mm ball with stand offers a compact pivot point for linkage ends where space is limited; it restores a positive contact between control rods and arms to reduce play and improve crisp response.
Fitting tips: check mating sockets and linkage pins for wear prior to installation, replace items in matched pairs when symmetry matters, and ensure the stand seats securely in the arm or bracket. No specialist tools are needed beyond standard RC hand tools, and the 10-piece quantity supports multiple repairs or spares for field use.
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