Item Type: FREEZEMOD Water Tank Bubbler Specifications: Total Length: Approx. 43.50mm / 1.7in(including hand screw position) Outer Diameter: Approx. 18mm / 0.7in (hand screw position) Thread: Male G1/4in+female G1/4in Material: Brass Fixing Method: Hand screw1Small?volume water tank can be installed, which can effectively prevent air bubbles. 2Using conventional G1/4in female thread, any joint of this thread can be installed. 3The product made of brass materials, strong and durable, has a long service life. 4High safety factor, with strict quality control and quality assurance, can be used with peace of mind. 5With small size, easy to carry and store, convenient to use and with good performance.1 x WaterTankBubbler