An apparatus and method for obtaining data stored in an electronic module within a power tool over a power line cord of the tool, and without any disassembly of the tool being required. Selected data is displayed or hidden depending on whether the first state or second state is detected. a plasma, and a magnetic field are produced in a gas maintained at a pressure below atmospheric pressure between at least the substrate, acting as an electrode, and at least one counter-electrode to enable the substrate to be bombarded by the ions produced in the electric discharge. 05 to 10 parts by mass for 100 parts by mass of the rubber component.