zoomto 5Pack 4 Inch Ring Filter Socks, 4"x15" Thick Mesh Felt Filter Bags (50 Micron) with Plastic Ring

["Color: White; Diameter: 10.5cm / 4''; Overall Dimension: 38 x 14cm / 15 x 5.5'' (L*W);Package Content: 5 x Filter Sock","Premium Material & Durable Design：Made of high-quality PP (polypropylene) composite thick felt, with an extra-thick design for longer service life.","Excellent Filtration Performance：Offers reliable mechanical filtration; regular replacement helps maintain clear water quality.","Hygienic Sealed Packaging：Each product is fully sealed in a plastic bag to ensure cleanliness.","Corrosion Resistance & Wide Application：Acid and alkali resistant, suitable for various liquids including sewage and chemical fluids."]