100% Brand New & Nice Quality Color:As the picture shows material:Stainless Steel size: 12mm 16mm Package included:Aquarium Filter Guard (You Pick) Features: An attractive way to make your aquarium shrimp safe. Tiny animals like most freshwater shrimp, invertebrates, as well as small fish and fry are at risk of being sucked into the large slots on most standard intake strainers. When cleaning is required, simply brush any accumulated debris off of the Filter Guard with your hand or a soft brush of some sort like a tooth brush. Please note that Stainless Steel Filter Guards fit over the filter's intake pipe, not over the strainer. If your filter has an integrated strainer, these Filter Guards will not work without modification.