Stainless steel intake strainer protective cover [Product Features] · Suitable for all kinds of external filters and waterfall filters with an outer diameter of 12mm or 16mm. · Protect and prevent small fish and shrimp from being sucked into the filter and causing death. · Prevent large pieces of garbage and grass blades from being sucked into the filter. [Precautions] · Wash the protective covers frequently to prevent garbage from blocking the inlet. · Pay attention to wire solder joints when cleaning. · The wire mesh may be deformed in the transportation process, but you can gradually restore the circle by pinching.