Wera kraftform vde kompakt interchangeable screwdriver set comprises of a vde handle with blade auto lock system and vde blades individually tested under a 10000v load to guarantee safe working at 1000v supplied in a rugged belt pouch drop tested at extreme temperatures to ensure insulation wont fail in tough jobsite conditions individually tested for dielectric strength under a 10000v load to guarantee safe working at 1000v drop tested at extreme temperatures to ensure insulation wont fail in t