Plug for fixing insulation boards in external thermal insulation cladding systems. The drill hole must be brushed out or blown out after production. Old render is not a stable substrate. Drill hole depth and plug length must be selected larger accordingly. Suitable for concrete, natural stone, solid stone, perforated bricks, hollow blocks and aerated concrete. Minimum anchoring depth in the load-bearing substrate 40 mm, for perforated and hollow bricks 60 mm.