Hotshot metal suspension pieces mk1 mk2? Any differences?

[Cooltoys]

I noticed on the lot of Hotshot metal pieces one of them are metal unfinished one looks like stainless steel. Which is which?

Mk1 or Mk2 ?

Parts came from the same lot i got a while back.

Left side is the stainless like pieces

Right side is the regular metal finish

[kontemax]

Mk1 on the left imho.

Max

[Cplus]

Three holes are what are on the one I have.

It's a solid bumper - so does that make it a mk2?

[Cooltoys]

I didn't even notice the 6 & 3 holes on it.. I guess i was too busy comparing the shiny one to the other one.. Ooops...