"This ITL 5-piece Screwdriver Set contains 4 versatile, slotted screwdrivers, and a circuit tester carefully selected for some of the most common engineering tasks. They are designed with engineering and live line work in mind, and have ergonomic insulated handles for easy gripping and insulated stems.The insulation provides maximum personal protection, withstanding extremes of temperature, and high voltage, supplied in a handy protective tool roll.They are manufactured from injection moulded nylon thermoplastic and are 100% tested to IEC60900, Category C and ASTMF1505. Designed to withstand extreme impact, abrasion, and are also 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 +158ºF, -40ºC to +70ºC. Set Contains: 1 x Pozidriv No.2 Screwdriver.1 x 7mm (3in) Terminal Screwdriver.1 x 7mm (3in) Electricians Screwdriver.1 x 100mm (4in) Electricians Screwdriver.1 x Circuit Tester. "