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.
16-Pack Powerful Neodymium Bar Magnets | MIKEDE Rare Earth 𧲠Metal Magnets with Double-Sided Adhesive | 60 x 10 x 3 mm
35 Review
50Pcs Strong Neodymium Magnets With Hole & Mounting Screws - Heavy Duty Rare Earth Disc Countersunk For Locker, Tool Storage & Crafts
31 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
50Pcs Neodymium Magnets With Countersunk Hole And Stainless Screws - Strong Rare Earth Magnets Disc For Locker, Tool Storage, Crafts By MIKEDE
42 Review