Features: This 0.6mm thick copper bird bath disc naturally purifies water through oxidation, reducing cleaning frequency from every 3 days to 14 days while maintaining freshness water for avian visitors. Featuring a three point support design for maximums water contact and weather resistant passivation treatments, this 99.99% copper disc works seamlessly with fountains and heating systems year round. Ideal for bird enthusiasts and garden owners seeking low maintenance solution to keep water habitats hygienic without chemical additives. Place this auto cleaning copper plate in outdoor birdbaths to inhibit algae growth and organic buildup, ensuring clean drinking water through seasonal temperature changes. Engineered with corrosions resistant copper technology by historical monuments, this maintenance saving disc eliminates multiple cleaning tools while protecting backyard ecosystem. Specifications: Dimension:10×10×0.06cm/3.93×3.93×0.02in Component:Copper Package Includes: 1pc Bird bath copper plate note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.