The type of fixture are you trying to repair -- toilet, sink, tub, etc. The color group of your fixture: Yellow, Blue, Green, Pink, etc. The manufacturer of the fixture. Any numbers you find on the fixture.
Recommended if you have an expensive sink that has superficial scratches.
Color was exact fit for our sink. The scratches are unnoticeable to those not looking closely for them. I can see when I look close enough but much better than before. Saved an expensive sink. Not sure how it would work for severe damage as ours was superficial scratches from removing a tough faucet