Cornerr Levitation Coil Copper Electro Induction Experiment Coil 19*12MM M3 Tapping Teeth 9H4B3

100% brand new and high qualityFeatures:When a current is passed through the coil, a field is generated around the coil. This additional field can generate an external force to the upper permanent magnet, or push or suck.By adjusting the magnitude and direction of the current flowing through the coil, the force can be adjusted to generate Stable suspension.Made of high quality material,durable.Specification:Material: MetalColor: Copper colorOutside Diameter: app.19mm/0.75inInner Diameter:app.8mmHeight: app.12mm/0.47inNumber of turns: 480Inductance: 2500UHThe diameter of enameled wire is about 0.35mmIron core through hole M3 tapping teethElectrical inductancee:3.7mh Package includes:5 PC x Levitation Coil or 10pc optional