The term die-cast toy here refers to any toy or collectible model produced by using the die casting method. The toys are made of metal and plastic, the metal used commonly is ZAMAK (or Mazak), an alloy of zinc and aluminium. Zamak is also referred to as white metal or pot metal. The most common die-cast toys are scale models of automobiles, aircraft, construction equipment and trains, although almost anything can be produced by this method.
Diecast (or die cast, or die-cast) toys were first produced early in the 20th century by manufacturers such as Meccano (Dinky Toys) in the United Kingdom and Dowst Brothers (Tootsietoys) in the United States. The first models on the market were basic, consisting of a small car or van body with no interior. In the early days it was common for impurities in the Zamak alloy to result in metal fatigue; the casting would crack or decompose for no apparent reason. As a result, diecast toys made before World War II are difficult to find in good condition.