I have for sale 4x DMM Zodiac carabiners that I've used for rigging anchors for the past 4 years. I purchased these when I first got in to trad and wanted the safest, strongest biners I could find. They are completely overkill (32kN) for single pitch anchors and at 75g, not the lightest to haul up the wall.
Currently in the process of lightening my rack and thought I'd see if anyone else might make better use of these. They are in good condition where it matters (where the rope touches!). The external metal shows the usual signs of wear from being on a rack that's shuffled around grit for 4 years.