Adjustable bubble counter valve regulator diffuser single-head double-head needle valve compatible aquarium accessories

Product Description\n\nProduct Features\nDurable and durable\nPrecision copper construction for adjustable carbon dioxide release\nSpecial copper polished surface for lightweight and easy operation\nErgonomic design for easy installation without tools\nTwo styles available to meet different needs\nFeatures a check valve to prevent backflow during pressure changes\nThe carbon dioxide regulating valve uses a nut locking design to effectively lock the carbon dioxide tubing and prevent accidents caused by loosening\nIncludes only the aquarium single/double carbon dioxide regulating valve. Other accessories shown in the picture are for display purposes only and are not included\n\nProduct Specifications\nMaterial: Copper\nAvailable Sizes: Single/Double\nSingle size: approx. 3.8x2.9 cm / 1.50x1.14 inches\nDouble size: approx. 4.3x2.9 cm / 1.69x1.14 inches\nColors as shown\nAvailable Styles: Single/Double\nQuantity: 1 piece\n\nNote: No retail packaging\nPlease allow 0.1 due to manual measurement Please ensure you do not mind a slight error in centimeters before bidding. Due to differences in monitors, the image may not reflect the actual color of the item. Thank you. Package includes 1 x Aquarium Valve Regulator Diffuser Single/Double Head CO2.