MATERIAL: These zinc and copper strips are made of premium metal material and are safe, sturdy and to use. LIGHTWEIGHT AND COMPACT: The copper and zinc anode set are lightweight and compact, and are easy to carry and store. STIR INTERESTS IN PHYSICS: The metal electrode strips set are great tool in helping stir chidlren interests in studying physics and chemistry. Iplusmile Copper Zinc Strips Anode Set Zinc Copper Electrode Strips Set Supplies for Fruit Power Scientific Experiments Electroplating Plating - 10 Pairs Iplusmile Features - Color: Golden, silver. - Material: Zinc, copper.  - Size: 5.50X2.50X0.10cm/2.16X0.98X0.04inch. Package Includes 10 x copper strip 10 x zinc strip Iplusmile Features - Color: Golden, silver. - Material: Zinc, copper.  - Size: 5.50X2.50X0.10cm/2.16X0.98X0.04inch. Package Includes 10 x copper strip 10 x zinc strip