uxcell Aquarium Fish Tank Green Plastic Adapter Connector End Blue Air Stone Bar 30cm Rising bubbles enhance vital aquarium aeration and water movement. Product Name : Aquarium Air Stone;Suitable for : Tank, Aquarium Outlet Connector Diameter : 5.5mm/ 0.22" (max.);Stone Length : 30cm/ 11.8" Total Size (Approx) : 32 x 2.1 x 1.3cm/ 12.6" x 0.8" x 0.5" (L*W*T);Color : Green, Blue Weight : 75g;Packag : 1 x Aquarium Air Stone;Shaped : Bar Design;Material : Mineral, Plastic