Apex Magnets | 3mm x 3mm Cylinders - Neodymium Magnet
3mm dia x 1mm thick N35 Neodymium Magnet
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
3mm x 2mm Tiny Neodymium Disc Magnets N50, New, Super Strong! -100 or 500 pcs | eBay
N35 Neodymium Disc Magnet - 12mm dia x 3mm thick - 4.41lbs Pull