These are diametrically magnetised magnets which means the magnetic field runs parallel to the diameter. The Neodymium is coated in Nickel, Copper and Boron to enhance the lifespan of the magnet and the coating also gives off a smooth finish. These magnets are commonly used in industries like engineering, manufacturing and packaging for their strong magnetic properties. They are also often used in theatre design, model making, exhibition design and furniture making.FOR….. • Bicycle dynamos. • Crafts, hobbies and jewelry. • Computer hard drives. • Health bracelets, bandages and other medical devices. • Magnetic resonance imaging devices. • Wind turbine generators. • Fishing reel brakes. • Permanent magnet motors in cordless tools. • High-performance AC servo motors. • Traction motors. • Integrated starter-generators in hybrid and electric vehicles. • Mechanically powered flashlights which use magnets for generating electricity from a shaking motion.