Package Include 4 x fish tank bubble strip Characteristics - Material: ABS. - The air bars produce an abundant cascade of bubbles, increasing oxygen in your aquarium or fish tank. - suitable for freshwater, saltwater aquarium and hydroponic use. - This air is made of good material, causing no effect to the health of your lovely fish. - It has a simple design, but very practical in use, bring much convenience to you. - With the use of oxygen pump can play the role of oxygen to fish tank. Goods Information If you are looking for a professional and affordable aquarium air, then your research is over here. That' s because our product can meet your need. Adopted of premium material, practical and durable for long time use. not easy to get deformed and bring you much convenience.