Wera series 160 i/7 Insulated screwdriver sets are tested individually for dielectric strength under a load of 10000 volts so as to ensure safe working with loads up to 1000 volts. They have a premium Gold Lasertip a tip which has a laser roughened surface which literally bites into the screwhead reducing cam-out & eliminating the need for two-handed screwdriving. They have a significantly extended service life due to bit-grade steel used in all Wera screwdrivers & have the patented Kraftform handle which is ergonomic multi-component & which uniquely fits to the shape of the hand during screwdriver use reducing fatigue & increasing speed. Smooth soft zones offer enhanced grip hard zones allow easy hand repositioning. Set of 7.1 each of the following: Slotted: 2.5 x 80 mm. 3.5 x 100 mm. 4.0 x 100 mm. 5.5 x 125 mm. Pozidriv: PZ1 x 80 mm. PZ2 x 100 mm. Voltage tester 3.0 x 70 mm.