Insulated Hand Tools from Jameson provide maximum electrical protection and are suitable for working live or close to live parts at nominal voltages up to 1,000 Volts. Constructed using heavy-duty injection molded Nylon 11; they are ideal for use in a wide variety of utility, electrical, and telecommunication applications. The 6-1/4 in. wire strippers feature a built-in adjustment screw and accommodate a wide range of solid/stranded wire sizes.