Material: Neodymium magnets. Magnets Countersunk Various 20mm x 3mm Hobby DIY Industrial Magnet Strong N52 🧲. (The pull force was tested at 20 Celsius degree, on a polished iron plate with a thickness of 20 mm. ).
eBay
Super Powerful Magnets Strong Disc Magnets for Fridge, DIY, Building, Scientific, Craft 5mmx2mm,8mmx2mm,10mmx2mm,10mmx3mm
Aliexpress UK
N35 NEODYMIUM MAGNETS. N35 Grade Neodymium Magnets. Neodymium Discs HERE. Neodymium Rings HERE. Safety with Neodymium Magnets. Neodymium Cubes, Squares, Bars HERE. Neodymium Skittles HERE. Neodymium Magnetic Hooks HERE.
eBay
New 10x5mm Super Powerful Magnet Strong Disc Magnets Great Pull Force Perfect for Fridge DIY Building Scientific Craft Education
Aliexpress UK
BEST QUALITY MAGNETS BY MAGNET -N52 STRENGTH. High-Quality N52 Magnets – Sizes Ranging from 2mm to 40mm. With a maximum energy product of 52 MGOe, these magnets provide the highest level of magnetism, making them ideal for various applications requiring intense magnetic force.
eBay
Powerful Magnets Strong Disc Magnets for Fridge, DIY, Building, Scientific, Craft 10x1 10x3 10*0.5 10*5 10*4 10x6 10x8 10*10
Aliexpress UK
Craft / Ferrite -make your own. Anisotropic Strontium ferrite ceramic 8 material. These craft magnets are stronger than your average craft magnet. Ferrite magnets do not conduct electricity unlike Alnico, NdFeb and Smco.
eBay
50x30mm Strong Cylinder Magnet 50mmx30mm For Home Refrigerators, Offices DIY 50x30 mm Big Disc Magnet 50*30 mm
Aliexpress UK
They have a high magnetic field strength and have a high coercivity (which makes them magnetically stable). Literally 1000s of uses. Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening.
eBay
30x1.5mm Powerful Magnets Strong Disc Magnets For Fridge, DIY, Building, Scientific, Craft, Education 30*1.5 30x1.5
Aliexpress UK
Small Magnet, Big Usage!
eBay
5x2mm Powerful Magnets Strong Disc Magnets For Fridge, DIY, Building, Scientific, Craft, Education 5*2 5x2
Aliexpress UK
Usually surprise is an issue--they can jump out of your hands and snap together from a surprising distance before you realize what is happening. They are strong enough that they can fly into each other or to a piece of iron or steel with such velocity that they can break and send sharp 'shrapnel' flying about!
eBay
5x3mm Small Round Powerful Magnetic Magnet 5x3 Strong Disc Magnets For Fridge, DIY, Building, Scientific, Craft, Education 5*3
Aliexpress UK
Due to the nature of all Neodymium magnets, it is possible for them to shatter when a large force is applied. This applies to all Neodymium magnets. Perfect for sticking notes on fridge doors.Great for do-it-yourself projects.Ages: 7+ ages, both for kids and adults.
eBay
20/50/100pcs 8mm x 1mm Disc Magnets - Ultra Thin Round Magnets for DIY Crafts, Fridge, Whiteboard, Science Projects
Aliexpress UK