A dirty pool is prone to skin diseases and it is essential to keep the pool clean. Why do you need these pool skimmer socks? Using pool socks can protect the pump impeller and shaft seal from damage/clogging. Thus extending the life of the pool filter/filter system. Anyone who's been in a repaired pool with a filtration system knows how valuable it is. Jiusion Skimmer Socks 30 Packs Replace new sock every 4-8 weeks. 30 packs are enough for a whole summer. Note that the skimmer support is not included.High QualityThese high quality nylon pool basket filter socks are made of ultra-fine mesh and durable elastic material.Fits Most Pool Skimmersa Works with most skimmer holders up to 25cm / 10 inches in diameter. Note Please do not use when dissolving chlorine in the basket. This will erode the socks.Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery quantity: (according to the main image)