Electromagnetism Kit Children will build an electromagnet to understand how it works. This product uses the magnetic property of the current coil with the iron core to produce type V and I electromagnets. Through experiments, children will compare the effect of coil and current revolutions as well as the effect of the single and bipolar poles on the magnetic force. Dimensions: 17,2 x 4,1 x 2,1 cm Batteries not included Assembly instructions are contained This product is not ready, you will manufacture it. There are all the materials needed to make your construction. Ages 10+