Set of 16 Metal Discs for metal identification, educational exercises, and demonstrations Each kit comes with 8 different 1" metal discs (2 of each metal) One of each pair is stamped with the metal name and the other is blank; great for metal identification exercises Two of each metal are included: mild steel, stainless steel, brass, zinc, nickel, bronze, aluminum and copper Includes a plastic case for This set of metal discs is the perfect educational set for general metal identification exercises and for demonstrating that some metals are magnetic whilst other are not. Each kit comes with 8 different metal discs, and there are two of each kind. Of the pairs, one is stamped with the name of the metal and one is blank. This is great for metal identification activities and exercises. Plastic case is include for convenient storage. The kit includes two of each: mild steel, stainless steel, brass, zinc, nickel, bronze, aluminum and copper.