Let me start by stating that the end result looks flawless. You want a 6” goodlooking metal-finish BD-ring that really protects the cut out, than this is one of the good options.
First apply the outer ring, and then the inner ring. Other reviewers are already describing that inside ring being a pain to put on, and I can only concur: I tried it with 2 other individuals and it still broke. Like it’s just a tad to small in diameter.
I doubt if any greasy would make a difference here.
It was still possible to bring it on the sticker and nobody will ever see it, but still: it’s loses stars over this. This wasn’t necessary.
It is very simple construction by the way that will last, looks flawless and doesn’t cause wrinkles.
This ring is very smooth and thus suitable for those who reach inside the BD a lot for miking and dampening. The big 6” is perfect for that.