The ITL 7 Piece Insulated 1/2in Drive Imperial Torque Wrench Kit. The tools in this set are manufactured from injection moulded nylon thermoplastic, and are 100% tested to IEC60900, Category C and ASTMF1505. They are designed to withstand extreme impact, abrasion, and are flame retardant. ITL tools are 100% tested using 1000 volts for 3 minutes submerged in water. They are Category C Impact Tested for operation within a greater temperature range -40ºF to and158ºF, -40ºC to and70ºC. Supplied in a case, contains: 5 x Imperial Sockets: 3/8, 7/16, 1/2, 5/8, 3/4, 1in AF. 1 x Extension Bar 127mm (5in). 1 x 1/2in Drive Torque Wrench 12-60Nm.