Features: This check Valves is only suitable for CO2 equipment. Crafted from quality stainless steel, durable. Easy to install and use, simple and convenient. Prevent water from entering carbon dioxide. This and easy to install Valves ensures a continuous CO2 supply. Specifications: Component: Stainless Steel Size: Approx.1.46x0.59inch Quantity: 1 Pc Package Includes: 1 pc Aquariums Supply note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.
eBay