Description Premium quality sponge connects to filter prevent debris from entering the filter barrel, extending filter media usage time. Prevent young fish and shrimp from being sucked into the filter tank. Easy to use directly into the inlet basket. Provides efficient water flow with less clogging for long lasting filtration. Features - Color: Black- Material: Cotton- Size: 6 x 4 x 4cm- Premium quality sponge connects to filter prevent debris from entering the filter barrel, extending filter media usage time.- Prevent young fish and shrimp from being sucked into the filter tank.- Easy to use directly into the water inlet. Good for freshwater and marine environments.- Provides efficient water flow with less clogging for long lasting filtration.Packing list: 2 x Pre-Filter Sponges