Uxcell Aquarium Pump Mineral Bubbles Release Air Stone, 3-Inch, Dark Gray Product Name : Aquarium Bubbles Air stone; Suitable for : Fish Tank, Aquarium Design : Cylinder Shaped; Material : Mineral, Plastic Fit Air Tube : 4.6mm/0.18"; Air Stone Size(excluded connector) : 11 x 2cm/4.3" x 0.79"(L*D) Total Size(Approx.) : 13.5 x 2.3cm/3" x 0.92"(L*D); Color : Black, Dark Gray Weight : 57g; Packag : 1 x Aquarium Bubbles Air stone