The J. Nageldinger & Son 5090-H Oxygen Regulator with Gauge and Flowmeter is a high-quality welding equipment accessory designed for use with oxygen. Made in the United States by Nageldinger & Son, this regulator is compatible with oxygen gas and features a built-in gauge and flowmeter for precise control and monitoring. Ideal for welding, soldering, and metalworking applications, this product ensures a safe and efficient supply of oxygen for various industrial processes.