uxcell 10 Pcs Aquarium Fish Tank Round Mineral Release Bubbles Airstone Blue Product Name : Aquarium Bubbles Airstone;Material : Mineral Stone, Plastic Color : Blue;Fit Air Tube : 5mm/ 0.2" Air Stone Size(excluded connector) : 30 x 30mm/ 1.2" x 1.2"(D*H);Total Length : 46mm/ 1.8" Weight : 246g Package Contents : 10 x Aquarium Bubbles Airstone