Type: Pool cleaning equipment Quantity: Pool filter balls This product has good water permeability and breathability. Contains no toxic and harmful substances, does not affect water quality. Durable and resistant to cleaning. Can be reused, dirt can be washed. Suitable for all agricultural environments (sea water, water can be). It can be used to filter sand and impurities in swimming pools. Their filtration results are more because they can filter particles in the pool water down to a size of only 1.5 micrometers. Filter balls can significantly the quality and of the pool. generation filter material for swimming pools replaces sand microparticle filtrationBall is the generation filter material for swimming pools, a perfect substitute for sand. A 700 g package corresponds in filter capacity to a sandbag of 25 kg. In addition to minimum weight and low weight, fiber mix ensures microparticle filtration. Unlike sand, it does not harden or clump during .Easy handling due to light weight. Does not damage or damage seals. Resistant to pool chemicals. Durability guaranteed.Machine wash.Performance: Acid resistance, high temperature resistance, resistance Adsorption rate: 98 (%)Anti-stress: 4 (kgf)Density: 0.1 (g / cm3)Porosity: 86 (%)Abrasion rate: 1Hardness: 1Chemical composition: Refrigerant acid solubility : 1 (%) color: white Material: cotton Size: 40 mm Package contents: 1 x bag of filter balls Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in it a little different from the real thing. The permitted measurement error is +/- 1-3 cm.