Features: Dives into the world of electronics with our AA Battery Holder, essential tool for educational physics experiments that demonstrates the principles of series and circuits. Crafted from ABS, this battery holder is suitable for flexibility in building various configurations, allowing users to experience firsthands the effects of circuit connections on voltages and current. Suitable for middle school and high school physics students, university engineering majors, and anyone on exploring electrical experiments and circuitry concepts. Suitable for use in physics classrooms and academic exhibition, this battery holder facilitates engaging demonstrations and hands on learning experiences. With clear polarity marking to prevent mishaps, our AA Battery Holder simplifies the learning process for providing a reliable power source for experimenters and enthusiasts. Specifications: Component:ABS Type:1Pc/2Pcs/5Pcs/10Pcs Size:Approx.80mm/3.15inch Package Includes: 4 Opotional Package: Package 1 Include:1Pc AA Battery Box Package 2 Include:2Pcs AA Battery Box Package 3 Include:5Pcs AA Battery Box Package 4 Include:10Pcs AA Battery Box note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.