Features Better Learning: Experiments have shown that energized wires are subjected to the use of force in a magnetic field, and the direction of force is related to the direction of current, the direction of magnetic induction energy, and the magnitude of curren Clear Demonstration: When the direction of the current between the squares or the magnetic field becomes opposite, the direction of the force acting on the broadcasting wire also becomes opposite. The Using Tips: During the experiment, the current should not be too high to avoid heating the wires and conductive tubes. After using the instrument, place it in a cool and dry place. Good Materials: Consisting of premium ABS and copper materials, the electro magnetic induction tool is very durable for long term use. Convenient Carry: Comes with a light weight and a compact size as well, the electromagnetic induction kit is very convenient to carry to outdoor. Specification: Item Type: Electromagnetic Induction Kit Material: ABS, Copper Package List:1 x Base1 x U Shaped Magnet1 x Square Coil2 x Hanging Rod4 x Nut1 x Hollow Copper Tube Package List 1 x Base 1 x U Shaped Magnet 1 x Square Coil 2 x Hanging Rod 4 x Nut 1 x Hollow Copper Tube