ELECTRODE STRIPS: Constructed using high- grade material, ensures it safety and can use it with confidence FRUIT POWER EXPERIMENT SUPPLIES: easy to use in scientific projects. Before operation, you need to prepare lemons, or some vegetables and beverages to assemble the battery METAL ELECTRODES: Improve children is ability to do things on their own, develop children is imagination and creativity ZINC ELECTRODE STRIPS: Through interesting fruit battery scientific experiments, parents can accompany your children to play and cultivate their science learning interest COPPER FLASHING: Use along with copper electrode strip and pin- type wires, to build your DIY fruit battery Colour: Material:Metal The actual product may have slight color difference or difference, which not affect the use Package Contents: 20 * Zinc Copper Sheet for Fruit Power Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.