They are stainless I believe. They are for a wood toe rail. I wish I could draw a picture of them here so you could see what they look like. You need to carve out a spot for them in the toe rail but they fit flush so that they become part of the toe rail. I saw a picture of an integrated chock on the net( someone redoing their to rail) and it was not what I'm looking for.First they were bronze and they had a totally different shape.
Kimberlite- Do you have a picture of yours anywhere?