10 Pack Neodymium Magnets, Permanent Rare Earth Magnets with Eyebolt, 50 LBS (23 KG) Magnet Hooks with Countersunk Hole Eyebolt for Retrieving in River and Magnetic Fishing: Amazon.com: Industrial & Scientific
Covered Hand Magnet - Ceramic Ferrite - 50 kg Attraction Force
80kg/50kg Super Strong Fishing Magnet Neodymium Magnetloop Sintered Neodymium Iron Boron Fishing Magnets With 10m Rope For River - Fishing Rope - AliExpress
Ceramic Pot Magnet - 50mm dia x 10mm thick x 8.5mm hole - 34.84lbs Pull
N42 Neodymium Rectangular Magnet - 50mm x 25mm x 10mm thick - 71lbs Pull
Kumar Industries T- Handle Magnet, Capacity: 50 Kg