I am not a climber. I bought rings to hang my hammock, which is what happened when I attached it to my carabiner. All rings have a very smooth surface with specific markings. Were they well packaged in a small (I think) waxed paper bag to keep moisture out? In any case, it was a good bag. They arrived on time and I can't wait to find out what else I'll be using them for. GM CLIMBING Blue rappel/descent ring Small aluminum ring 25kN/5600lbs for Rope Retriever anchor Anti-friction hammock
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