1. The stainless steel basket is used to shrimp and baby fish from being sucked into the filter. 2. Made of premium stainless steel material, sturdy and . 3. The mesh size is very small, which can avoid the little shrimp and fish being sucked into the filter. 4. Can be used to replace the inlet filter sleeve of external filter cylinder or waterfall filter. 5. The white rubber part is extendable. Convenient for you to use. Specification: Features: The stainless steel basket is used to shrimp and baby fish from being sucked into the filter. Made of premium stainless steel material, sturdy and . The mesh size is very small, which can avoid the little shrimp and fish being sucked into the filter. Can be used to replace the inlet filter sleeve of external filter cylinder or waterfall filter. The white rubber part is extendable. Convenient for you to use. Specification: Condition:Brand New Material: stainless steel Color: as picture shown Option: 12mm, 16mm