It is electrics experimental equipment for students, which is made of for and in use. This professional teaching equipment for physics teaching can train the student's practical ability and their interest in learning. A good teaching aid to help teachers explain relevant physical knowledge in class. Features - ColorAssorted Color - Material: Plastic, electronic component, glass. - Size: 6.70X3.40X2.20cm/2.63X1.34X0.86inch. - This product is manufactured with , special and unique for long time use. - Promote the student's understanding of basic electrics knowledge and their learning effect. - Easy enough for junior students and kids to explore in advance and get interested in physics science. - Portable design and compact size, easy to carry and store. It will meet your needs! - A good teaching aid to help teachers explain relevant physical knowledge in class. 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