12pcs Magnets Strong, Neodymium 9 24lbs+ Pulling Force with Countersunk Hole and Screws 16/20/25mm in for Crafts，Tool Storage, DIY

1,【Strong Magnetic Force】: The cylinder fridge magnets are made of the strongest neodymium magnet, it has a super strong magnet. The steel sleeve on surface prevent the magnet from breaking. The working temperature should NOT EXCEED 80 degrees. 2,【High Performance】: The surface of the rare earth magnet is treated with a three-layer （nickel-copper-nickel） coating, undergoes 48 hour salt spray test. Endow magnets with luster, rust and corrosion resistance properties. Magnetism does not lose its magnetic force over time. 3,【Packaging Information】:Package including 4pcs 16mm diameter magnets(Pulling force 4kg/8.8lbs), 4pcs 20mm diameter magnets(Pulling force 5kg/11lbs), 4pcs 25mm diameter magnets(Pulling force 11kg/24lbs),5pcs M3 screws, 5pcs M4 screws, 5pcs M5 screws. 4,【 Wide application range 】: Neodymium magnets with holes can be used in various occasions such as homes, offices, workshops,schools,kitchens,warehouses, etc. For arts, crafts and scientific purposes. 5,【 Easy to use 】: The magnet comes with countersunk holes and screws. Magnets can be connected by screws or directly attached to the surface of metal objects. Easy to disassemble and small in size, it can be carried around without taking up space.