Magnosphere 10 x Ferrite Block Ceramic Rectangular Magnet 30 mm 3 Black Holds 800g Hard Magnets

10 pieces - Ferrite Block Ceramic Rectangular Magnet 30 mm x 30 mm x 3 mm Ferrite Y30 - holds 800 g - Rectangular Hard Ferrite Magnets - Maximum Temperature: 250°C Ferrite magnets are made of an iron oxide powder and a blend of other metals. Their cheap price, together with their high heat and corrosion resistance, makes them perfect in many fields and applications, such as industrial equipment, gadgets, bricolage, automotive, holders, fixtures, sensors and many more! ECONOMICA - This ceramic magnet is an economical choice for magnets. Only a small part of the cost of a rare earth magnet of similar size APPLICATION SCOPE - Science education in schools, children's science projects, namely suspended trains, hand-made at home, light DURABLE - They will not rust in any environment. Suitable for fresh water or salt water. Magnetism will always continue normal use