Feature:1. STABLE MATERIAL: Copper grain adopt selected material after standard process, stable in dry air, does not react with water, soluble in nitric acid and hot concentrated sulfuric acid2. EXCELLENT PERFORMANCE: Copper grain has good ductility, thermal conductivity and electrical conductivity3. WIDE APPLICATION: Copper casting grain can be used in industrial filtration, petroleum, chemical, printing and other industries4. TECHNICAL PARAMETERS: Raw copper metal come with 99.99% high purity, 200 grams package, the size is 35mm5. EASY HANDLING: The copper granules are small and easy to handle, making them convenient for various applicationsSpecification:Item Type: Copper GrainMaterial: CopperSize: Approx. 3-5mm / 0.12-0.20inWeight: 200 g / 7.1 oz(approx.).Package List:1 Pack of Copper Grain