SODIAL(R) 10PCS 14.5mm x 25mm Mineral Bubble Release Aquarium Air Stone Airstone Blue Product Name : Aquarium Air Stone;Stone Size : 14.5 x 25mm/ 0.6" x 1"(D*L) Connector Size : 4.5 x 2.5mm/ 0.18" x 0.1"(Outer Dia*Inner Dia);Total Length : 38mm/ 1.5" Main Material : Mineral, Plastic;Color : Blue Weight : 60g Package Contents : 10 x Aquarium Air Stone