Description: MaterialThe CO2 Cylinder Connector is made of sturdy metal and rubber materials, offering you reliable performance and long service life.Efficient CO2 Cylinder ConnectorOur CO2 adapter is designed to connect with your sparkling water machine seamlessly, ensuring a quick and efficient refilling process. Suitable for home or commercial use.Easy to useThis CO2 adapter is easy to install and use. Its ergonomic design makes it easy to install and use.Versatile Soda Maker AccessoryThis CO2 adapter is a must-have accessory for your soda maker. It allows you to refill your CO2 tank effortlessly, making your soda making process more enjoyable.CO2 Quick Adapter for Filling TankWith this CO2 adapter, refilling your CO2 tank has never been easier. It's a practical tool for all sparkling water machine owners. Specification: Material:?Rubber, Stainless Steel Size Chart: Thread A: TR21-4 ThreadorThread B: G1/2-14 Thread Package Includes: 1 Piece?CO2 Cylinder Connector Adapter (as you? choose) Note: Please allow slightly errors due to manual measurement and different monitors.