Reduced blade insulation diameter for deep spring and screw elements. For screwdrivers of blades diameter 3,5 mm and higher.Suitable for safe live working under voltage in electro technical fields.BladeTreated highly alloyed steelBlack surfaceInsulated coating SLIM.HandleErgonomic with hexagonal cross-sectionResistant to oil and petrolThe shape prevents it from rolling away.The set contains: 2.5 x 75 4.0 x 100 5.5 x 125 PH1 x 80 PH2 x 100Screwdrivers meet EN 60900:2004 (IEC 60900:2004) requirements. Declaration of conformity issued in accordance with law. Each item is tested for electric breakdown in a water bath at 10 000 V. Safe working up to 1 000 V is guaranteed.