LOYALHEARTDY Mini Scuba Tank Diving SMACO Condition: Each item appears to have been used sparingly and is in good condition. I am not an expert, so I don't know the details. I purchased these after confirming their operation at a major recycling shop, and have since stored them without use. The contents are all shown in the photos, so please review them and consider purchasing. Please consider purchasing them as they are. I will pack them with bubble wrap and ship them with a fragile warning.