Used to maintain the cleanliness of the swimming pool by releasing copper and other minerals. The chlorine-free solar shock replacement copper anode features a unique blend of metals that eliminate microorganisms and inhibit metal growth in the pool. Replacing copper anodes can help save up to 80% on chlorine expenses. Suitable for solar pool ionizer purifiers that do not use chlorine. Color: copper color Material: copper alloy Size: approximately 1.8 x 10.5cm Package Contents: 2 x copper anode 2 x bolt Only the package contents listed above are included; other products are not part of the package. Note: Light shooting and different displays may cause the item's color in the picture to slightly differ from the actual product. The allowable measurement error is +/- 1-3cm.