20pcs 12 x 12 x 3mm N52 Strong NdFeB Annular Magnet Birthday DIY Intelligent Gift

Description:You can also use them as a stress reliever: simply manipulate them, mangle them, rearrange them and your troubles will float away. Shove one in your pocket and you'll never be bored again. Main Features:Hours and hours of fiddlingThese magnets are ideal for the children DIY invention projectThe major elements present in this magnet include neodymium ( Nd ), iron ( Fe ) and boron ( B )Application industries: magnetized wax, pipe descaling, magnetic fixture, automatic machine, magnetic locks, doors and windows magnetic, magnetic luggage, leather magnetic toys, magnetic tools, gifts and packaging Materials: Magnet Theme: Science,Trick Features: DIY Toy Series: Entertainment 0.043 Package weight: 0.101 kg Package size: 7.00 x 3.00 x 2.00 cm / 2.76 x 1.18 x 0.79 inches Package Contents: 20 x Magnet