These things are very small! I can't fault them as they give measurements but as someone who rarely uses the metric system I didn't really realize how small the 10mm diameter was. They are just over 1/4 inch in diameter. What I blame them for is how fragile/fragile they are. The one in the photo was split in half, that's how it came out of the box. I broke another one by driving the screw through the hole a bit too far. The magnet strength is decent for its size, but again this size is tiny so you won't be hanging very heavy things with these little fellas.
16-Pack Powerful Neodymium Bar Magnets | MIKEDE Rare Earth 𧲠Metal Magnets with Double-Sided Adhesive | 60 x 10 x 3 mm
35 Review
Power Up Your Projects With MIKEDE Cube Neodymium Magnets - Super Strong Rare Earth Magnets For Science And DIY
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 Strong Neodymium Magnets With Hole & Mounting Screws - Heavy Duty Rare Earth Disc Countersunk For Locker, Tool Storage & Crafts
31 Review