Wera 05003471001 kraftform kompakt vde 18 piece bit holder blades set wera 05003471001 this set from wera includes 1 insulated kraftform handheld bit holder and a selection of 16 interchangeable vde blades suitable for use with most screw head types plus a single pole voltage tester suitable for working at voltages of up to 1000v supplied in easily portable pouch wera 05003471001 kraftform kompakt vde 18 piece bit holder blades set