Fangrui Product Details Fangrui Product Details Used To Keep The Swimming Pool Clean By Releasing Copper And Other Minerals Into The Swimming Pool. The Chlorine-free Solar Shock Copper Anode Is A Secret Mixture Of Metals That Kill Microorganisms And Prevents The Growth Of Metals In The Pool. Replacing Copper Anodes Can Help You Save Of Your Chlorine Costs. Suitable For Solar Pool Ionizer Purifier Chlorine Free Purifiers Type: Copper Anode For Solar Pool Ionizer Purifier Installation: Vertical Purifying Position: Terminal Purification Water Quality Requirements: Municipal Water/well Water Colour:copper Color Material:copper Alloy Size:1.8 X 10.5cm Package Contents: 1 X Copper Anode Only The Above Package Content, Other Products Are Not Included. Note: Light And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.