Description: 50pcs N35 Super Strong Disc Magnets 4mm x 10mm Rare Earth Neodymium Magnets.    Specification: Material:NdFeB (Neodymium);  Shape:Round/Disc Magnet;  Color:Silver;  Size:4mm x 10mm (Diameter x Thickness);  Grade:N35;  Quantity:50pcs;  Operating temperature:≤80℃;  Ages:7+ ages, both for kids and adults.  Please be care when  break apart  because Neodymium block magnet have strong Magnetism.    Feature: Super strong Rare-Earth magnets - they are hard to break apart once they get stuck with each other.  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.  It suitable for DIY projects, such as whiteboard fixing, adsorption of various steel parts,ixing tissue box on the roof, etc.    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.  Magnets might affect water meter ,electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down).  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.    Package included: 50 X Neodymium Magnets