Hammerset insulation fixing with reinforced plastic nail allowing fast and trouble-free installation with correct plug expansion while reducing heat transmission. Expansion zone designed for low embedment depths, reducing the amount of drilling required. Features stability with optimum plate stiffness. Used with additional KWL 90mm Insulation Holding Plate for soft insulation materials such as mineral wool. Features stability with optimum plate stiffness. For use with: polystyrene boards, mineral wool boards, light wood wool building boards, polyurethane boards, wood fibre boards, lightweight recycled panels and external thermal insulation composite systems (ETICS).