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. Kit comes with a tool case and includes a 1/2-inch drive ratchet wrench, extensions and both metric and imperial sockets in 1/2-inch drive. Metric sockets include 8 mm, 10 mm, 13 mm, 17 mm, 19 mm, 20 mm, 22 mm and 25 mm. Imperial sockets include 3/8 in., 7/16 in., 1/2 in., 9/16 in., 3/4 in., 7/8 in., 15/16 in. and 1 in. Extensions include 5 in. and 10 in.