Red brick clay with Holes - 6 * 11 * 24 cm Clay bricks are molds of certain dimensions that are used to make walls and facades of buildings. The materials used to make bricks are clay and sand. Used to fill in the blanks only. It is even lightweight and good insulation for heat and sound, so it is used in the work of interior walls, and its resistance to the pressure is not less than 35 kg / cm2,