OTGO Single/Dual Head Check Valve-Regulator Diffuser Aquarium CO2 Bubble Counter Hot -Single Head-

100% brand new and high quality Material: Aluminum Alloy+ Acrylic Color: Silver Small and compact Easy to install and replace A non-return function to prevent the backflow when the pressure changes Made of tough material for long-term use Size: (L*W) 8*1.5cm/3.15"*0.59" (Single-Head) 8.34*1.4cm/3.31"*0.55" (Dual- Head) No Retail Packages Quantity:1Pc Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!