Used to keep the swimming pool clear via liberating copper and other minerals into the swimming pool. The chlorine-free photo voltaic shock alternative copper anode is a secret mixture of metals that kill microorganisms and stops the expansion of metals within the pool. Replacing copper anodes allow you to save 80% of your chlorine costs. Solar Ionizer alternative basket, that helps to capture copper particles when released from anode throughout ionization Suitable for Solar Pool Ionizer Purifier Chlorine Free Purifiers. Colour:Blue+copper Material:Nylon + copper alloy Package Contents: 1 x Filter Screen 1 x Sopper Anode 1 x Bolt Only the above kit content, diversified products aren't included. Note: Light and various reveals could cause the colour of the object in the photo slightly varied from the genuine thing. The size allowed error is +/- 1-3cm.