Kittmip Solar Copper Anode Copper Replacement L=4.13" D=0.71" for Solar Pool Ionizer Chlorine Cost Save for Reduce Irritations Cleans and Clears Your Pool (2)Brand: Kittmip Features: You Will Receive: you will receive 2 replacement copper anodes to keep your pool clean by releasing copper and other minerals into your pool; The product will gradually become smaller during use and the surface will become less smooth Size Information: our copper replacement bar metric size 6, M6 for two sides, it is 105 mm 4. 13 inches in length, 18 mm 0. 71 inch in diameter, slightly smaller than standard size, please check