This robust cylinder adaptor is designed to seamlessly connect a CGA 510 cylinder to a CGA 300 regulator, providing a reliable solution for situations where different CGA threads prevent a direct connection. Crafted from solid brass, this one-piece design ensures durability and strength, capable of withstanding pressures up to 500 PSI. Manufactured in the USA, it combines quality construction with practical functionality, making it an essential component for welding and gas applications. Weighing just 0.3156 lbs, this adaptor is easy to handle while delivering the performance you need for efficient operation in your welding setups.