Milling cutter with a diameter of 68mm for styrofoam and mineral wool. Thanks to the specially designed milling cutter, you can easily and quickly create holes for insulation fasteners. In the drilled holes, we secure a styrofoam plug, which provides insulation at the location of the mechanical connectors. This prevents the formation of thermal bridges. Product features: Made of durable plastic Milling cutter with a diameter of 68mm Compatible with a screwdriver or drill equipped with a chuck Technical specifications: Material: Plastic Diameter: 68 mm