This is a set of inflation and exhaust valves for a scuba diving drysuit. They were working fine until the day before yesterday (used until January 2026), but I'm discarding the drysuit due to boot degradation, so I'm selling the valves as spare parts. These are used items that were simply cut out with scissors, so please refrain from purchasing if you are overly concerned about their condition. I think they can be used for diving other than leisure, such as by commercial divers or fishermen.