Jardin Plastic Aquarium Tank Encased Bubble Air Stone, 6-Inch, Green Product name : aquarium air stone; material : mineral, pvc plastic Color: green, blue;overall size: 15 x 2 2 x 1 2cm/6" x 0 86" x 0 47"(l*w*h) Hole Diameter: 6mm/0. 23"(Max. Outside) Net Weight : 40g Package content : 1 x aquarium bubble air stone