uxcell 10 Pcs Aquarium Fish Tank Mineral Bubble Air Stone Oxygen Diffuser Blue 26mm x 12mm Color: Blue; Package Content: 10 Pcs x Aquarium Air Stone Total Size: 15x3x3cm; Material: Mineral, Plastic Net Weight: 66g; Product Name: Aquarium Air Stone Stone Size: 26 x 12 mm / 1" x 0.47" (L*D) Connector Size: 4 x 2.5mm / 0.15" x 0.09" (Outer Dia*Inner Dia)