Description The super strong Rare Earth magnets are hard to break apart once they get stuck with each other Its perfect for sticking notes on fridge doors & also suitable for DIY projects such as whiteboard fixing adsorption of various steel parts fixing tissue box on the roof etc Shape Oblong Size Approx L 20 x W 10 x H 2mm Material Neodymium N35 Operating temperature 80℃ Surface Nickel plating Package included 5 x Strong Block Cuboid Magnets 20 x 10 x 2mm