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; the Insulated Cable Jointers Coring Knife is ideal for use in a wide variety of utility, electrical, and telecommunication applications. It features an insulated curved fixed blade, wide sturdy grip and vinyl sheath. The curved blade measures 2-1/4 in.es with overall measurements of 7 in. x 1.5 in. x 1 in.