Nice Performance: this mounting magnet is a neodymium magnet N42 with a 0.35 inch/ 8.6 mm thick metal base; It can withstand up to 150 pounds of vertical pull force Wide Range of Use: these neodymium magnets come with M6 external threaded studs that are screwed directly into or through the threaded holes of the fixture and secured with nuts to connect any hardware components; Ideal for cameras, videos, display panels, automation equipment, tools and machines, and also as a motion camera mounted on the roof Sturdy and Practical: our magnet mounts are covered with steel, which can withstand force without cracking and breaking the magnet Corrosion Proof Material: with 3 good corrosion proof coatings, and the steel case prevents scratching and shattering with bare magnets, these round magnet stud will serve you for a long time,to ensure the service life of these products, please avoid prolonged exposure to rain or salt water. It is recommended to wipe dry after use and store in a dry place. Please Note: please operate the neodymium cup magnets with caution in the process of using, do not put your finger behind the magnet to prevent injury, in addition, the maximum working temperature of the magnet is 176 degrees Fahrenheit/ 80 degrees Centigrade; Please make sure not to use our magnet to fix your tools at very high temperature.