Description
Product description Specifications: Material: Stainless Steel Size:8 x40mm/3.15×1.57(DxL) Application: 4 mm inner diameter tube. Color: Silver Weight: 15 g Quantity:1PC Feature: One way professional check valve.Small and compact, about 4cm long. Can prevent the aquarium from the water flowing back, which is caused by the decrease of CO2 pressure,and keep the function and service life of CO2 bottle. Easy to install, no additional tools required, can be connected to any location in seconds Fits st
