If you want to save time and also be sure of getting a stable installation use our Lättbetongplugg Med Skruv (light concrete plug and screw), an all-in-one-product; this tip from us will save you several steps. The plug is intended for penetration installation, i.e. for fixing one type of material to another. The plug is simply installed by pushing it through a pre-drilled hole in the outer material and hammering it to the material behind. Then screw the fastener into the plug; the latter will expand like a knot further in where the material is more compact.