
These are indeed very strong magnets. I had trouble getting them apart (and be careful, they pinch). However, when they attract and come together, at least as a group, they literally shatter into tiny sharp pieces. If you're very careful and get them separated, two function fairly well but don't let them bond with the stack or you'll have sharp shards everywhere.

MIKEDE 8-Pack Powerful Neodymium Magnets With Double-Sided Adhesive - Ideal For Fridge, Crafts, DIY, Science, Building & Office Projects - Rare Earth Magnets For Strong Grip
39 Review

16-Pack Powerful Neodymium Bar Magnets | MIKEDE Rare Earth π§² Metal Magnets with Double-Sided Adhesive | 60 x 10 x 3 mm
35 Review

60X10X3Mm Neodymium Bar Magnets 25 Pack - Strong Permanent Rare Earth Magnet With Double-Sided Adhesive For Craft, Fridge, Kitchen And Office.
30 Review

MIKEDE Strong Neodymium Disc Magnets, 16 Pack Powerful Permanent Rare Earth Magnets With Double-Sided Adhesive, Fridge, DIY, Building, Scientific, Craft, And Office Magnets, 1.26 Inch D X 1/8 Inch H
40 Review