Features: 1.Made of high grade stainless steel material, which is anti-corrosion, abrasion resistant, glossy and durable 2.Ergonomically design, easy to install and convenient to remove 3.High quality stainless steel needle micro-metering valve with high precision, easy to release CO2 by fine tuning 4.Special metal-grinded surface, light weight, easy to operate 5.Different styles to choose, meeting your different demands Specification: This tool is made of high grade stainless steel material, which is anti-corrosion, abrasion resistant, glossy and durable. High quality stainless steel needle micro-metering valve with high precision, easy to release CO2 by fine tuning. Special metal-grinded surface, light weight, easy to operate._x005F_x000D_ _x005F_x000D_ Features:_x005F_x000D_ 1. Made of high grade stainless steel material, which is anti-corrosion, abrasion resistant, glossy and durable._x005F_x000D_ 2. Ergonomically design, easy to install and convenient to remove._x005F_x000D_ 3. High quality stainless steel needle micro-metering valve with high precision, easy to release CO2 by fine tuning._x005F_x000D_ 4. Special metal-grinded surface, light weight, easy to operate._x005F_x000D_ 5. Different styles to choose, meeting your different demands._x005F_x000D_ _x005F_x000D_ Specification:_x005F_x000D_ Item Type: Aquarium System Accessory _x005F_x000D_ Material: Stainless Steel _x005F_x000D_ Optional Style: 01#Single Head Micro-metering Valve for Gauge, 02#Dual Head Micro-metering Valve for Hose, 03#Single Head Micro-metering Valve + Bubble Counter, 04#Dual Head Micro-metering Valve + Bubble Counter_x005F_x000D_ Item Color: As Pictures Shown_x005F_x000D_ Package Weight: Approx. 47-83 g / 1.6-2.9 oz_x005F_x000D_ _x005F_x000D_ Package Include: _x005F_x000D_ 1 * Aquarium System Accessory_x005F_x000D_ _x005F_x000D_ _x005F_x000D_ Note:_x005F_x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.