ITEM NAME:2 Pcs 2 Way Aquarium Plants Tank Dual Head CO2 Tube Valve Description: Precise structure, durable stainless steel inner part with aluminum alloy to release CO2 by fine tuning. Special metal grinded surface, light weight, easy to operate. Ergonomically design, easy to install without using any tool. Dual way Co2 regulator valve applies nut lock design can effectively lock the CO2 tube, to prevent the accidents caused by loose. Size: Approx. 4x2.6x1.2cm/1.57x1.02x0.47 inch Specification: Material: Aluminum Alloy Size: Approx. 4x2.6x1.2cm/1.57x1.02x0.47 inch Package Includes: 2 Piece CO2 Adjustment Valve Note: Since the size above is measured by hand, the size of the actual item could be slightly different from the size above. Due to the lighting effects, monitor settings, etc. There could be some slight difference in the color tone of the pictures and the actual item. SKU: DMO0015418919432235.Dual way Co2 regulator valve applies nut lock design can effectively lock the CO2 tube, to prevent the accidents caused by loose. Precise structure, durable stainless steel inner part with aluminum alloy to release CO2 by fine tuning.