Jardin Sintered Starfish Shaped Bubbles Air Stone for Aquarium, 4.1-Inch, Blue Product Name : Aquarium Bubbles Air stone; Suitable for : Fish Tank, Aquarium Design : Starfish Shaped; Material : Mineral, Plastic Air Stone Size(excluded connector) : 9.3 x 8.6cm/3.7" x 3.4"(L x W); Fit Air Tube : 5mm/2" Total Length(Approx.) : 10.5cm/4.1"; Color : Blue Weight : 99g; Package : 1 x Aquarium Bubbles Air stone