Features:Retentivity: BR:12.1-12.5 / (T:1.21-1.25)coercivity: KA/M >=899intrinsic coercivity: KA/M > = 955magnetic energy product: kJ/m3: 287~310Perfect for sticking notes on fridge doorsGreat for do-it-yourself projectsAges: 7+ agesSpecifications:Material:NdFeBDimensions: 20 x 10 x 2mmColor:SilverWight:30 gPackage weight:40 gPackage included:10 x Magnet