This is a set of a Sterling Rope PAS (Personal Anchor System) and a Rock Exotica auto-locking carabiner. The PAS is 18mm wide, so it's durable. It's old, but the condition is good because it hasn't been used much. The carabiner is a Rock Exotica, renowned in the rescue world. The gate opens slightly offset from the spine, so despite its small size, it has a wide gate clearance and is easy to handle.