A set of 16 discs (25mm in diameter) for demonstrating that some metals are magnetic whilst others are not and for general metal identification exercises.The set contains:2 x Mild Steel 2 x Stainless Steel 2 x Brass 2 x Nickel 2 x Silver 2 x Bronze 2 x Aluminium2 x Copper.One of each pair of discs is stamped with the name of the metal while the other is unmarked.