Includes: You will get 3 pieces aquarium filter, the stainless steel basket protects shrimp and fry from being sucked into the filter. 16 mm inner diameter is suitable for pipes with an outer diameter of about 17 mm. Easy to clean: When cleaning is necessary, simply brush off the accumulated debris on the filter guard with your hand or a soft brush such as a toothbrush. High quality: Made of high quality stainless steel, non-toxic and not easy to break, does not cause problems with algae, non-toxic and harmless to fish, can be used for a long time. Prevent clogging: An attractive way to secure your aquarium shrimp. Can also prevent large debris from being sucked in and blocking the filter system. Protect the Shrimp and Fish: Suitable for use in aquariums and fish tanks, protecting shrimp and small fish safely. Easy to install and use.