E-outstanding Electrical Circuit Experiment Tools Physics Science Lab Basic Circuit Learning Starter Kit Electricity Experiment Set 10 1.5V Bulb, 1 Battery Box, 1 Switch Button, 2 Wires, 2 Lamps

The small ball is a tungsten bulb made of glass, metal, and insulating materials. | Tips:The positive and negative poles must not be directly connected, otherwise it may cause a short circuit. | It can be used as a flashlight light source and indicator light of a distribution box. | Mainly used for electrical experiments in primary and secondary schools. | The package includes: 10 * 1.5V bulb. 1 * Battery box. 1 * Switch button. 2 * Wires. 2 * Lamp holder.