N35 Grade Neodymium Magnets Used
4, 6, 10 or 20 Individual Pieces/Skittles per lot supplied
Durable High Quality Products
20mm diameter x 25mm high
Holds 20 sheets of A4 paper against metal surface
Safety with Neodymium Magnets
Due to their wonderful strong magnetic properties, these magnets can be dangerous. Small magnets are especially dangerous around small children. If they are swallowed, they can block respiratory and digestive tract. Larger magnets can affect anything magnetic or electronic in their vicinity/room, including wiping off information on magnetic strip cards (as your credit card). To be aware of the potential hazardous of these otherwise wonderful helpers, is therefore very important.
Be careful when handling larger sized magnets. They are not just very strong, but also BRITTLE! If they collide hard with each other, or collide hard against any object, they will most likely break.
About Neodymium Magnets
Neodymium magnets are composed of three elements - neodymium, iron and boron in ratio 2:14:1 and are sometimes known as NIB (or chemically NdFeB) magnets. They are also called rare earth magnets, as neodymium contained in them is one of the rare earth elements (these are often found together in ore deposits and despite their name are relatively abundant in the Earth’s crust).
Neodymium magnets are strongest commercially available magnets and can hold about 1000 times of their own weight. They are 10 times more effective than usual magnets. They have many uses in different industries and their commercial use is ever increasing due to their main property - they are much lighter and much stronger than what we have known until recently.
Just to mention some industrial uses for illustration, they are used in computer hard drives, in parachute closing, in electrical and hybrid engines, cordless tools, loudspeakers, security systems switches, medical devices such as MRI. Even NASA used it to collect dust from Mars for investigation on earth.
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