Jardin Plastic CO2 Diffuser Aquarium Maintenance with Sucker, Clear/Black Product Name : Aquarium CO2 Atomizer Material : Plastic Overall Size : 55 x 38mm/2.2" x 1.5"(L x D) Main color : Clear, Black Weight : 23g Package Contents 1 x Aquarium CO2 Atomizer 1 x Suction Cup