There are many specifications and tpyes. There are filter foam, bio-sponge, aquarium clamp, cleaner pump, aquarium cleaner, crystal box, betta box,magnetic cleaner,thermometer,weed plants,background pictures and so on, all the products are for raising pets purpose. It can be used in glass aquariums and spring fountains, even in industries. There arent pictures of them, so for details pls visit our website or contact us directly.