Description This is a tool for magnetizing or demagnetize. Quickly and easily magnetize small tools so they attract screws or nuts for easy starting and removing. Insert a screwdriver or nut driver into the hole, pull it out and it's magnetized! Features The shatterproof box is made from high-quality plastic Uses 2 C8 industrial permanent magnets No batteries or electrical required Instantly magnetize or demagnetize steel tools and small parts Specification Color: Green Size: 51*51*29mm Package Weight:100g For any technical support or suggestion, please kindly go to our forum.