REALTH Disc Magnets Diameter 12mm x 3mm Neodymium Small Rare Earth Magnetic Round Magnet for Fridge Office Science Project Teaching and Craft 10 Pack(MC1210): Amazon.com: Industrial & Scientific
N35 Neodymium Disc Magnet - 12mm dia x 3mm thick - 4.41lbs Pull
ZDYWY 20 Pieces 12 x 3mm with 3mm Countersunk Hole Permanent Disc Rare Earth Fastener Magnets
Amazon.com: 40pcs 6*3mm Small Magnets for Crafts - MEALOS Mini Magnets Tiny Magnets - Little Button Magnets Micro Magnets - Round Fridge Magnets Also for Miniatures, Model Making, Crafts and 3D Printed
Neodymium Magnets 3mm X 3mm | 6mm X 3mm Neodymium Magnet | Rare Earth Magnet 6mm - Magnetic Materials - Aliexpress
N42 Neodymium Cube Magnet - 3mm x 3mm x 3mm thick - 0.83lbs Pull