Craft Wire Content: 99.9% Pure Copper. Electroculture Proven​​: Copper Wire Emits Natural Ions To Stimulate Root Growth, Boost Nutrient Uptake, And Enhance Soil Microbial Activity. Ideal For Tomatoes, Herbs, And Flowers Rust & Corrosion Resistant​​: 99.9% Pure Copper with Anti-Oxidation Coating, Maintain conductivity for years. Soil pH Balancer​​: Copper ions naturally regulate soil acidity, reducing the need for chemical fertilizers. Perfect for organic growers. Application: Widely Use In Electroculture Gardening, Jewelry Making, Home Decor, Diy Crafts And So On. 99.9% Solid Bare Copper Wire for Gardening, Boost Plant Growth & Soil Health, 310Ft /1lb Spool,Supplied by Wonderway (20 Gauge/0.8mm, 16oz)