Metal Pieces Set

12 metal pieces, each stamped with the identifying letter. Containing: Soft Aluminium, Hard Aluminium, Magnetic Stainless Steel, Non-Magnetic Stainless Steel, Zinc, Zinc Plate, Nickel Silver, Bronze, Galvanised Steel, Mild Steel, Copper and Brass. Size: 25mm x 50mm

Q = How thick are the metal pieces in the metal pieces set?
A = The thickness of the metal pieces varies from 0.5 to 0.8mm. Some of the more expensive metals are just coatings on a cheaper metal base, to keep the cost down for schools.