Set of 12 metal and non-metal cubes

This is a set of 12 same size cubes of different materials used to compare the density and other physical properties. Each cube size is 2 x 2 x 2 cm Materials include Brass, Copper, Aluminum, Iron, Zinc, Lead, Tin, Soft wood, Hard wood, Plastic, Rubber and Acrylic.Metals include major commercial alloys.Includes a material identification guide online or in print.