Jardin Plastic Shell Bubbles Air Stone Bar for Aquarium, 50cm, Green Product Name : Aquarium Bubbles Air Stone; Suitable for : Fish Tank, Aquarium Material : Mineral, Plastic; Air Stone Body Length : 50cm/20" Total Size(Approx.) : 53 x 2.2 x 1.3cm/21.3" x 0.85" x 0.52"(L x W x H) Import Diameter (Approx.) : 4.8mm/0.19"; Color : Green, Blue; Net Weight : 140g Package : 1 x Aquarium Bubbles Air Stone