Features: .Sturdy Material: The bubble wall airs stone bar is made of plastic, which is strong and sturdy to use, and safe for your fish. Function: The aquarium bubble wand is perfect for your fish tank or aquarium, and it is the best partners for the airs pump. This airs stone releases the bubbles smaller, denser, uniform, which makes more oxygen dissolving rate in water. It can create the atomization effect and bubble beams will make your aquarium like a fairylands. Easy Installation: Easy to install and the airs inlet head could be disassembled for easily cleaning, keeping airs intake freely. With strong suction cup, it could firmly fix the bubble tube on the wall of fish tank, the bubble tube won39;t float on the water, practical. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Specification: 7inch:17.8cm 10inch: 25.4cm 14inch: 35.6cm 18inch: 47.5cm 23inch: 58cm 28inch: 71.1cm Material: plastic material, very light texture there is no need to worry about floating with suction cup Package List: 1/2 Tubes Fish Tank Bubble Tube