This product is a round ceramic magnet with a diameter of 8mm and a thickness of 4mm, Y30 grade, no coating on the surface, suitable for hardware accessories, molds, automobiles, electronics, electrical appliances, packaging, toys, gift crafts, fitness magnetron cars, motors, micro Motors, computers, instruments, meters, motorcycles, cameras, smart phones, clocks, audio, home appliances, office automation, magnetic therapy and various fields of daily life....