Diametrically Magnetised N42 Neodymium Ring Magnet for Arts, Crafts, Model Making, DIY, Hobbies, Office and Home 30mm O.D. x 10mm I.D. thick

@@@DWIMyRSwzv2QxU0DjGFkOTFOWgUW0EZm@@@ FOR PROVIDING ROTATIONAL MOVEMENT. Unusually, diametrically magnetised magnets are not designed to hold the maximum possible weight for the size of the magnet but instead are used to provide rotational movement. Diametrically magnetised magnets are used on the end of shafts to provide drive. RESISTANT TO DEMAGNETISATION. Excellent resistance to demagnetisation. CORROSION-RESISTANT PREMIUM COATING. Coated with three layers of nickel, copper, and nickel to reduce corrosion and provide a smooth and clean finish. SPECIFICATIONS. 30mm O.D. x 10mm I.D. x 10mm thick. Each magnet's north and south pole are on opposite curved sides., Weight: 0.1543235834 Pounds, Manufacturer: Magnet Expert®