120 in Pack: There are 20 magnets in our magnet kit, so even if you lose one of them, there are still many magnets that can be used in time. 2Permanent Magnets: These magnets have superb permanent magnetism and their magnetic strength does not diminish over time. They will never lose their magnetic strength, even in close proximity to other magnets or other operations. 3Small Size: The individual size of this magnet is small, so you can carry it around with you at any time according to your actual use, and you can do easy storage when you don't need it. 4Well Coated: These magnet bars are triple coated with Ni, Cu, Ni, making them extremely durable and providing a shiny finish. This Ni, Cu, Ni coating also provides ideal protection against rust. 5Wide Application: The magnets can be used for DIY projects, science experiments, refrigerators, shower doors, work or office, scientific purposes, arts and crafts or school classrooms.