It is suitable for tanks with M18x1.5 thread Easy to install and remove. High quality brass, high hardness, and wear-resistant. Replaceable valve, commonly used for the . polished, well sealed. Interface: CGA320 Color: gold Material: copper Size: Length: 51 mm/2.05 inches Package Contents: 1 x co2 valve adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.