Description: 【Nice Aquarium Accessory】: Our Nano Bubble Disc is the great accessory for your aquarium, providing an effective way to increase oxygen levels for your ornamental fish. 【Fine Bubbles】: This Fish Tank Oxygen Stone is designed to produce fine bubbles, which are more efficient in oxygenating your fish tank, ensuring a healthier living environment for your fish. 【Dense Bubble Stone】: The dense bubble stone is a key component of our product, designed to produce a large number of tiny bubbles to enhance the overall oxygenation process. 【Multifunctional Accessory】: Aquarium Air Stones Fits for most oxygen pump, it makes a versatile addition to your aquarium setup. 【Aesthetic 】: Not only increases the oxygen level, but also creates a beautiful aesthetic in your fish tank, enhancing your overall enjoyment of the aquarium. Size Chart: Total Length: 4.47cm/1.76inch Diameter: 2.47cm/0.97inch Package Includes: 1 Aquarium Air Stones Note: Please allow slightly errors due to manual measurement and different monitors.