Knauf Micro Movement Bead is applied on partition or ceilings to prevent the cracking of the plaster on the joints between gypsum boards in case of structural movements. Field of Application: Applied on the joints between gypsum boards to avoid cracking on big wall or ceiling surfaces. The movement bead avoid the cracking of the plasteron the joints between gypsum boards in case of structural movements. This movement bead can be used at or 90° for internal corners (2 in 1). Plastering Thickness: 1mm finishing joint compound on both sides of the movement bead. Fixing: The expanded wings of the movement bead can be led with staples on both sides and it has a good bonding with the Ready gaps jointing compound.