1.Electric screwdriver CL-4000,CL-6500,brush type 2. operability,reliability and stability 3. Can connect with counter. Electric screwdriverModel ... Grip designed for easy operation of long hour working.3. Running in a low voltage direct current to ... designed for ease of operation over long work periods.3.Running on low voltage, direct current, this ... -4000 CL-6500 CL-6500 Automatic Electric screwdriver