【Powerful Magnetic Force】- Our neodymium round base disc magnets are made of rare earth neodymium metal material, which makes their magnetism very strong. | 【More Durable than Others】- These countersunk magnets with hole are made of NdFeB material with a nickel-plated coat for maximum durability and protection against corrosion. Steel cups protects magnets from breaking which greatly increase the longevity of the rare earth cup magnets | 【Easy to Install】- These countersunk hole magnetic discs for easy use with 6 screw(Included), which makes you able to use them in two different ways. You can not only use these industrial magnets on metallic items, also on non-metallic items. The neodymium cup magnets with countersunk center hole that is perfect for mounting with a flat head screw or bolt | 【Useful Magnetic Tools】- These strong industrial cup magnets are great above the workbench to hold tools that you use consistently, so they are within easy reach. The heavy duty neodymium cup magnets will hold up some of your heavier hand tools quite well and very easily. Perfect for organizing and hanging in workshop, and decluttering your home, garage, business and schools. Holding, Lifting, Fishing, Closing, Retrieving, and much more | 【Professional Brand】- Made under ISO 9001 Quality Systems. We are professional neodymium cup magnets seller and you can find any magnets you want in our store. Search MIKEDE MAGNETS. Find the strong magnets you want!