Very elastic, light and environmentally friendly, they are an effective alternative to traditional filtration sand. Fast filtration, low energy efficiency, high adsorption capacity, long life, trap microscopic suspended solids that are not easily removed by sedimentation, making swimming pools Simple installation steps make it easy to start a swimming pool cleaning sand filter system. At the same time, the pool filter balls of the sand filter pool pump are easy to replace, which makes the whole filtration process more convenient. The pool filter balls can be cleaned regularly and are machine washable, very durable and low performance loss. Suitable for swimming pool filtration, sand pool filters, swimming pools, aquariums, etc. to improve water quality. Product name: F7 fiber ball - H Material: polyester fiber < p> Product specifications: 30 - 50mm Packing method: 200g vacuum packaging Note: The data is all manual measurement, please allow some 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.