Gold thickness choice across the series
The 87666-5's 15.0µin gold sits between the 30.0µin 87666-2 and the 15.0µin 87756-4 — the 87756-4 shares the same 22-26 AWG range and plating thickness, while the 87523-4 steps up to 20-24 AWG at the same 15.0µin gold grade.
