This 0.38L round bottom black pressure bottle is perfect for a variety of work scenarios and application needs. It is manufactured with high-quality materials and has a sturdy and durable construction. Whether in outdoor adventure, diving, gas storage or other applications, it can provide reliable performance and safety. At the same time, its compact size and lightweight design make it easy to carry and use. Whether you are a professional or a hobbyist, this round bottom black pressure bottle will meet your needs and provide you with a reliable gas storage solution.