Description Are you looking for a professional, yet affordable physics experimental equipment? Are you in search of a sturdy, trustworthy tool that can help students know the basic physical knowledge? If yes, look no further! Our professional physics experimental equipment must meet you needs. It is one of the best choices for you. It is simple in appearance design but practical in use, bringing much convenience to you. Features - Color: As shown. - Material: Plastic, electronic component, glass. - Size: 6.70X3.40X2.20cm/2.63X1.34X0.86inch. - Constructed by using high-grade material, ensures it safety and can use it with confidence. - This is very useful for home school experiments to make and disconnect a single electrical connection circuit. - Put education in fun, cultivate scientific knowledge. Perfect for any home, school, or laboratory. - Special design and it is in fine craftsmanship. It is the best replacement for your old, broken one. - Stimulate students imagination, action ability to the interest in learning. Packing list2 x lamp holders (without battery)1 x single-pole switch5 x wires2 x AA battery boxes4 x small light bulbs