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're ideal for use in a wide variety of utility, electrical, and telecommunication applications. Insulated Nut Driver fits 11/32 in. fasteners and provides 1 in. (25mm) stud clearance.