Plugs for mounting in insulation in a set with metal screws (10 pcs.) Dimensions of the plug: 27 x 80 mm Dimensions of the screw: 4,5 x 40 mm (in the set, a Torx bit is included) Designed for mounting small items on walls insulated with polystyrene foam. Thanks to our screws, you will mount: lamps, plates, cameras, thermometers, holders, strips, etc. We mount the plug in the polystyrene foam using a screwdriver with a Torx bit, then we screw the item to be mounted to it with metal screws. The special thread construction guarantees secure mounting in polystyrene foam. Mounting the plug using a key or a Torx-type bit.