The present invention relates to a handhold wireless device, comprising a main body and a hanging frame; wherein the two sides of the main body are each provided with a guiding trench having a first end and a second end and for allowing the hanging frame sliding between the two ends. Methods of preparing the substrate and use of the substrate are also disclosed. Influx of the hard particles into the work piece substrate is effected during said mixing by the rotating tool. An overrunning clutch is configured to include a driven member moved in response to the transmitted torque in the input direction.