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 4-piece insulated screwdriver set jt-kt-02150 contains: 1/8 inch x 3 inch slotted terminal screwdriver jt-sd-01860 3/16 inch x 3 inch slotted electricians screwdriver jt-sd-01880 3/16 inch x 6 inch slotted electricians screwdriver jt-sd-01890 no. 2 x 4 inch phillips screwdriver jt-sd-02020 8-pocket tool roll jt-tc-03190 features: engineered nylon 11 injection molded to tool for maximum personal protection exceeds international standards: iec 60900:2012 and astm f1505 1,000-volt rated for inlive linein applications virtually indestructible – cut, abrasion, and impact resistant withstands temperature extremes from -40 f to 158 f -40 c to 70 c meets stringent requirements for cat inchc inch – cold impact rating every tool is 100% inspected – tested to 10,000 volts / rated to 1,000 volts industry-leading lifetime limited warranty