Usually black chains are the cheaper ones and corrode quickly.
I always prefer nickle plated (inner and outer links) chains because these look good and don't corrode that quickly.
KMC does stainless steel chains, but these are not black.
I use several SRAM PC870 chains, although these have just nickle plated outer links
PC890 has Ni plated inner links also, but too expensive for me.
Sram connecting link is fine to use.
Usually black chains are the cheaper ones and corrode quickly.
I always prefer nickle plated (inner and outer links) chains because these look good and don't corrode that quickly.
KMC does stainless steel chains, but these are not black.
I use several SRAM PC870 chains, although these have just nickle plated outer links
PC890 has Ni plated inner links also, but too expensive for me.
Sram connecting link is fine to use.