This ITL 24 Piece Insulated 1/4in Drive Socket Set. 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: 10 x Metric Sockets: 4, 5.5, 6, 7, 8, 9, 10, 11, 13, and 14mm. 1 x 1/4in Reversible Ratchet. 1 x Extension Bar 150mm (6in). 12 x Bit Adapter and Bits.