It is safe introductory kit for electricity teaching. It helps children to consolidate the knowledge in text books and gain a deeper understanding of of . By setting up simple circuits, it is easier for your child to learn basic electrical rules and improve your child's hands-on ability, thinking ability, creativity, and improvement. The excellent workmanship of our product will bring you a . Features - ColorAssorted Color - Material: Plastic, electronic component, glass. - Size: 6.70X3.40X2.20cm/2.63X1.34X0.86inch. - Adopts precision production to stable characteristics and high reliability. - Fine workmanship and creative appearance ensure its popularity and practicality. - teaching the basic principles of electricity and the working principles of simple circuits. - These lightweight physics experiment equipment are perfect for physics demos and projects in school. - Suitable for being sent as a present for friends or families who have kids, they will love it. Package list: 2 x lamp holders (without battery) 1 x single-pole 5 x wires 2 x AA battery boxes 4 x small light bulbs