Super Strong Neodymium Magnet N42 3 x 1/8 x 5/16" Permanent Magnet Bar, The World's Strongest & Most Powerful Rare Earth Magnets by Applied Magnets: Amazon.com: Industrial & Scientific
30 x 10 x 5mm thick N42 Neodymium Magnet - 8.1kg Pull (Pack of 4) : Amazon.co.uk: DIY & Tools
Amazon.com: Magnet Expert 75 x 10 x 3 Mm Thick N42 Neodymium Magnet - 12.4kg Pull ( Pack of 4 ) : Industrial & Scientific
Magnet Expert® 5mm dia x 1mm thick N42 Neodymium Magnet - 0.3kg Pull ( Pack of 50 ) : Amazon.co.uk: DIY & Tools
Amazon.com: Applied Magnets® 1-pc, Grade N42, Strong NdFeB Neodymium Magnet Ring, 3" OD x 1.5" ID x 1/2". : Industrial & Scientific