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.