first4magnets FB160450 4 Expert long Ferrite Bar Magnet with North & South Identified (Pack of 4),Grey,16 x 50mm

IDEAL FOR EDUCATION. These painted ferrite bar magnets with identified poles are weakly magnetised making them safe for children and perfect for simple experiments with ferrous items such as iron filings and paperclips and for displaying the attracting and repelling effects of magnets. IDEAL FOR TEACHING. These ferrite bar magnets are instantly recognisable and are great for teaching children about the basics of magnetism. EASILY IDENTIFIABLE POLES. The North and south poles are clearly identified PROTECTIVE COATING. Protective painted finish. SPECIFICATIONS. 16mm x 4mm x 50mm long. Safe for children.