Used to keep the swimming pool clean by releasing copper and other minerals into the swimming pool.The chlorine-free solar shock replacement copper anode is a secret mixture of kill microorganisms and prevents the growth of metals in the pool.Replacing copper anodes can help you save 80% of your chlorine costs.Solar Ionizer replacement basket, helps to capture copper debris when released from anode during ionizationSuitable for many Solar Pool Ionizer Purifier Chlorine Free Purifiers.Material:Nylon + copper alloycolour:Blue+copperCopper rod: 105mm long, 18mm diameter; weight 228 g (0.5 lb)Spring: stainless steel 316 material, length 125mm, diameter 40mm,Basket: nylon material, length 120mm, diameter 68mmPackage Contents:1 * Filter Screen1 * Copper Anode1 * spring1 * Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.