Description:Material: Neodymium magnets (Nd2Fe14B)Grade: N52 (much stronger than N35，N38，N42，N45...)Plated: Ni-Cu-NiMagnetization Direction: AxialSize:Dia*H=6*10mmQuantity: 20pcsFunction:Super strong，great for Do-It-Yourself projectsGood items for sticking notes and other things you want.Notes:Be careful to use， as they are very strong and fragile.Any questions， please do not hesitate to send us message， but not open case directly， we guarantee solve your problem at your satisfaction!