Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Magnets & Magnetic Balls |
| Origin | - |
| Material | Neodymium Iron Boron (NdFeB) |
| Shape | Round Disc |
| Available Diameters | 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm |
| Coating | Nickel-Copper-Nickel (Ni-Cu-Ni) |
| Magnetic Grade | N52 |
| Operating Temperature | Up to 80°C (176°F) |
| Surface Finish | Polished Silver |
| Application | Crafts, DIY Projects, Industrial Fixing, Whiteboards |
| Package Contents | Set of Magnets (Quantity varies by size selection) |
| Shipping | Free Standard Shipping |
Anonymous
Mar 31, 2026
Rating: 5/5
Excellent for whiteboard organization
Bought the 15mm set to organize tools on my garage whiteboard. They hold heavy markers and small metal tools without sliding down. Highly recommend for organizational projects.
Anonymous
Mar 30, 2026
Rating: 5/5
Perfect for my craft business
These magnets are exactly what I needed for my handmade leather wallets. The 10mm size fits perfectly inside the flap. The nickel coating looks professional and hasn't chipped after weeks of use.
Anonymous
Mar 23, 2026
Rating: 5/5
Strong and durable
These neodymium magnets are serious business. I used them to fix a loose cabinet door, and it works like a charm. The high intensity is real. Make sure to keep them away from electronics.
Anonymous
Mar 22, 2026
Rating: 5/5
Incredibly strong for their size
I ordered the 20mm discs for a workshop project, and I was shocked by how powerful they are. They held two pieces of steel together firmly. Just be careful when handling them so they don't snap together and pinch your fingers.
Anonymous
Mar 19, 2026
Rating: 4/5
Great value, fast shipping
The magnets work as advertised. Very strong pull force. I gave 4 stars instead of 5 because the packaging could be slightly better; one magnet had shifted during transit, but no damage occurred.
Anonymous
Mar 02, 2026
Rating: 5/5
Best magnets I've bought online
I've tried several brands, but Cihai offers the best intensity for the price. I used the 30mm ones to mount a small sensor on my car, and they haven't budged even on bumpy roads.
Q: Is the 60mm size available in different thicknesses?
A: Currently, the 60mm option is available in a standard 5mm thickness. If you require custom dimensions, please let us know, and we can check availability for special orders.
Q: Do you offer bulk discounts for orders over 100 pieces?
A: Yes, we offer tiered pricing for bulk orders. Please contact our sales team through the 'Contact Seller' button with your required quantity for a custom quote.
Q: Are these magnets safe to use near credit cards or phones?
A: Due to their high intensity, we recommend keeping these magnets at least 6 inches away from credit cards, hard drives, pacemakers, and mobile phones to prevent data loss or interference.
Q: What is the actual holding force for the 20mm diameter magnet?
A: The holding force depends on the surface and setup, but a single 20mm N52 magnet can typically hold approximately 15-20 lbs (6.8-9 kg) when attached directly to a thick steel plate.
Q: Can these magnets be used outdoors in the rain?
A: While the Ni-Cu-Ni coating provides good corrosion resistance, prolonged exposure to water or humid environments may eventually cause rust. For outdoor use, we suggest applying an additional waterproof sealant.
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