Amazon.com: New Lon0167 20x15m_m DC Electro Holding Magnet Force 2.5Kg 12V w 18.5cm Cable(20x15 mn DC Electro Holding Magnet 2,5 kg 12 V mit 18,5 cm Kabel : Industrial & Scientific
Holding magnet adapter with a release mechanism
Electromagnets and permanent electromagnets | Goudsmit Magnetics