As other reviews have noted, the measurements given are not accurate. These magnets are smaller than stated in all sizes. But I didn't mind if they were a bit smaller for my project, so I bought them despite the reviews. However, misleading dimensions aside, they work great and are quite durable considering their small size. I haven't had any problems with them breaking and the magnetic field is quite strong. The seller really should either produce them in the correct size or alter the sizes listed here - on some projects I'm sure exact sizing is important.
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
Powerful Neodymium Bar Magnets With Double-Sided Adhesive - Ideal For Home, Office & Scientific Uses - Pack Of 16 Magnets
40 Review
50Pcs Strong Neodymium Magnets With Hole & Mounting Screws - Heavy Duty Rare Earth Disc Countersunk For Locker, Tool Storage & Crafts
31 Review
50Pcs Neodymium Magnets With Countersunk Hole And Stainless Screws - Strong Rare Earth Magnets Disc For Locker, Tool Storage, Crafts By MIKEDE
42 Review