Features: Professional crafted from heat resistant brass, this CGA 320 adapters nut set ensures secure connection for carbon dioxide tank regulators, oxygen/ cylinders. Features precise machined CGA 320 NPT1/4 thread, integrated washer, and corrosion resistant brass construction for leak proof sealing and long terms durability in high pressure environment. Ideal for welders, beverage system technicians, and laboratory operators requiring reliable gas cylinder pressure management solution. Perfect for safely adjusting gas flows in industrial workshops, carbon dioxide beverage dispensers installations. This regulator adapters set simplifies gas system maintenance while meeting professional pressure measurement instrument requirements. Specifications: Component:Brass Size:Approx.6x3cm/2.36x1.18inch Product name: Carbon Dioxide gas tank pressure reducing valves Thread: CGA-320 NPT1/4 Package Includes: 1 Set Brass Gas Valves Adapters note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.