Corrosion on Cams

[GooseMachine]

Hi!

I just got a MCG Ultimate + GF base boxed set, what a lovely set indeed!

However when I went to switch the cams to space-s ones, There seems to be some corrosion or other surface wear on one cam?

Is this normal?

Is it safe to use?

On one:

On the left:

[fallout9]

Not an issue, just residue from the chemical process during chrome plating. Just wipe them clean with a cloth.