Block magnet 15 x 4 x 4 mm, holds approx. 1,7 kg, Nickel-plated - supermagnete.de
Amazon.com: The Magnet Source Heavy Duty Ceramic Block Magnets - .393" Thick x .875" Wide x 1.875" Long (2 Pieces) : Industrial & Scientific
Block Magnet Letters | George & Willy – George and Willy
Block Magnets | Ceramic Magnets | Hard Ferrite Magnets
Amazon.com: nicknack Mini Magnetic Blocks Toys Magnetic Tiles Building Blocks for Kids Baby and Toddler Gift Magnet Stacking Block Toys, 116pcs : Toys & Games
Neodymium Block Magnet - SDM Magnetics Co., Ltd.
N52 Super Strong Neodymium Block Magnet 2x2x1/2” Flat NdFeB Rare Earth Rectangular Magnet for Science, Projects and Industries, 1-Count: Industrial Rare Earth Magnets: Amazon.com: Industrial & Scientific