Neodymium Disc Magnets (NdFeB) Size =6mm x 3mm (Aprox.1/4" x 1/8") Triple Plated Nickel Finish (Ni-Cu-Ni) Grade N35 Axially Magnetized WARNING!!! Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other. These magnets are very powerful which should be handled with great care. Without parents supervised do not allow children to playing magnets as they could get injured. Especially pay attention to the small magnets, please place in somewhere children can't reach place. Listing and template services provided by inkFrog