Neon indicator in clear plastic with metal earth stud in top of handle. Lights up when screwdriver is touched on voltages between 110-250V AC and earth contact is formed by touching the metal stud. Plastic insulating sleeve on the screwdriver blade. 15mm tip. Length 190mm. Neon indicator in clear plastic with metal earth stud in top of handle. Lights up when screwdriver is touched on voltages between 110-250V AC and earth contact is formed by touching the metal stud. Plastic insulating sleeve on the screwdriver blade. 15mm tip. Length 190mm.