SoftFinish® electric slimFix slotted/ Phillips screwdriver set, 6 pcsInsulation 1000 V AC, VDE-tested and with GS mark.Blade: High quality chrome-vanadium-molybdenum steel, through hardened, black-finish. Protective insulation spray-coated directly onto the blade Application: For all work on or around electrical components up to 1000 V AC.http://www.wiha.com/international/content/view/full/51642http://www.wiha.com/england/Information-Services/What-s-new/Wiha-News/slimTECHNOLOGY-The-innovation-for-VDE-fastening-tools