A variety of materials in the form of rectangular blocks intended to familiarise the student with the appearance 'feel' texture hardness and density of a range of common substances.Kit contains blocks of materials in the following sizes:Softwood Hardwood Paraffin Wax Aluminium Iron Foamed Polystyrene: 50mm x 40mm x 30mmPerspex Glass Slate Aluminium Softwood Marble: 20mm x 20mm x 100mm Lead: 50mm x 50mm x 20mmAluminium: 50mm x 50mm x 80mmHardwood: 50mm x 50mm x 200mmBrass: 20mm x 20mm x 50mmIron: 40mm x 40mm x 20mm.