Specification: Item Type: Solar Copper Anode Product Size: Approx. 10.5 x 1.8 x 1.8cm / 4.1 x 0.7 x 0.7in Material: Copper Weight: Approx. 237g / 8.4oz Uses: For solar pool ionizer, saving chlorine costs, reducing irritation, cleans and clears your swimming pool Package List: 1 x Anode 1 x Screw Note: Your anode may be slightly discolored or contain small amounts of impurities commonly found in copper. The product is milled pure copper (with 1% silver) from copper bar. The nature of copper is that it can oxidize and create discoloration. Small amounts of impurities, commonly found in copper, can also discolor with contact with moisture and air. Features STANDARD SIZES: The solar anode replacement has a length of 10.5cm and a diameter of 1.8cm, with standard sizes and strong adaptability HIHG EFFICIENCY: Solar copper anode replacement to help save 80% on chlorine costs, reduce irritation, clean and clear your swimming pool COPPER ANODE: The anode is made of excellent copper material, with high hardness, good conductivity, wear resistance and long service life EASY TO INSTALL: With screw, this anode solar replacement is easy to install and use, has a glossy appearance without burrs, and is safe to operate MAIN PURPOSE: Sun shock replacement copper anode is a secret blend of microorganism killing metals that prevent growth in your pool