The Hercules Electromagnet

An amazing demonstration of how powerful magnetism can be! Powered by just one 9V PP3 battery this apparently small magnet has incredible lifting power of approx. 150kg. When switched on an iron plate locks itself solidly to the bottom of the electromagnetic core. Turning the switch off will release the load or hold it in the air, as required. Karabiners situated at the top and bottom of the device make it easy to clip into position. 

Specification
Battery and instructions are supplied.