• Made of Strong Neodymium Magnet, Unbelievable Holding Power for the Size, GOOD Holding Power per Magnet. • VERY DURABLE: These Magnets will not Break in Normal Use since the Magnets are Protected inside the Steel Cups which Greatly Increase the Longevity of the Magnets. • UNLIMITED APPLICATIONS: Handy Assembly for Home, Business and Schools! Holding, Lifting, Fishing, Closing, Retrieving, and Much More. • experienced professionals in Rare Earth Neodymium Magnets and Magnetic Assemblies. As a provider of strategic supply, we have the unique capability to meet the requests of all of our customers.