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 ionization Suitable for many Solar Pool Ionizer Purifier Chlorine Free Purifiers. Material:Nylon + copper alloy colour:Blue+copper Copper 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 68mm Package Contents: 1 * Filter Screen 1 * Copper Anode 1 * spring 1 * 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.