100pcs N50 12x3mm Countersink Ring Magnets 4mm Hole Rare Earth Neodymium Magnet

Description 100pcs N50 Strong Countersunk Ring Magnets 12 x 3mm Hole 4mm Rare Earth NeodymiumSpecification Shape RoundMaterial NdFeB magnetic materialsProduct Size 12 3mmHole Diameter 4mmGrade N50Quantity 100pcsAges 7 ages both for kids and adults Features Super strong Rare Earth magnets once they get stuck with each other they are hard to break apart Can also be used to extend protected lithium batteries with recessed contact points Electrically conductive making them suitable to extend recessed batteries Perfect for sticking notes on fridge doors Great for do it yourself projects Package Included 100x CountersunkMagnetsMore Details