150 mm Bar Magnet 1 Pair (2 Pcs) Red & Blue Combined Color is for educational only. This is a 6-inch Bar Magnet, useful for student demonstrations, plotting magnetic fields, etc. Made from magnetic steel strips and made in India. This 6″ Magnet is painted Red/Blue and Stamped with N and S to indicate North and South Poles. Supplied in Pairs with cardboard separators and plated soft iron keepers. is a supplier of Educational Bar Magnet in Bangladesh