Attributes

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

6 reviews

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.

5 FAQ

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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