Features: <br>1. Made from high quality ore material, environmentally friendly, durable and stable. <br>2. Help to dissolve more oxygen, increasing the amount of oxygen in the water. <br>3. Ideal for creating many oxygenating bubbles within your aquarium. <br>4. Easy to use, simply connect airline and air pump to the bubble stone, and place in the aquarium <br>5. Calabash shaped bubble stone design, unique and fashionable, perfect for decorating any fish tank. <br> <br> <br>Specification: <br>Condition: 100% Brand New <br>Material: Ore <br>Color: Random <br>Quantity: 10pcs <br>Fitment: 4mm Standard Interface <br>Diameter: Approx. 2cm/0.79in <br>Weight: Approx.70g/2.47oz <br> <br> <br>Package List: <br>10 * Bubble Stone <br> <br> <br>Notes: <br>1. Please allow minor error due to the manual measurement. Thanks for your understanding. <br>2. Monitors are not calibrated same, item color displayed in photos may be showing slightly difference from the real object. Please take the real one as standard.<br>1、Made from high quality ore material, environmentally friendly, durable and stable. <br>2、Help to dissolve more oxygen, increasing the amount of oxygen in the water. <br>3、Ideal for creating many oxygenating bubbles within your aquarium. <br>4、Easy to use, simply connect airline and air pump to the bubble stone, and place in the aquarium <br>5、Calabash shaped bubble stone design, unique and fashionable, perfect for decorating any fish tank.