Features The SML clean earth is a combined drill and paint removal tool. Removal of paint down to bare metal ensures a good earth connection. The tool is available in a range of drill sizes for tapping or clearance hole......Features The SML clean earth is a combined drill and paint removal tool. Removal of paint down to bare metal ensures a good earth connection. The tool is available in a range of drill sizes for tapping or clearance holes from 4mm to 12mm. Paint is removed from an area to suit washers from M4 to M12. The drill can be easily replaced and the tool fits in a standard 12mm chuck. UK and German Patents