The universal fixing FU is suitable for through and non-through installations. In solid building materials the screwing results in a complete expansion of the fastener against the hole wall, in perforated building materials the fastener body expands by undercutting into the cavity. Building materials Concrete, gypsum plasterboard and gypsum fibre boards, vertically perforated brick, hollow block made from lightweight concrete, cavity floor slabs made of brick, concrete, perforated sand-lime brick, solid sand-lime brick, aerated concrete. The price shown refers to a pack of 100 pieces