YXQ 50Kg/110LB Electromagnet Solenoid Electric Lifting Magnet Lift Holding, DC 12V 10W 50mm Dia.: Amazon.com: Industrial & Scientific
Neodymium Magnet Rod 4-30 mm from 1 kg to approx. 50 kg Tensile Force N45 Nickel-Plated NdFeB Round Square Rods D4-H6 mm N45 1 kg (Pack of 50) : Amazon.de: Home & Kitchen
Treasure Hunting Recovery Magnet River Fishing 50KG - Magnets By HSMAG