Wera 05003474001 kraftform kompakt vde 16 piece bit holder blades set wera 05003474001 this set from wera includes 1 insulated kraftform handheld bit holder and a selection of 14 interchangeable vde blades suitable for use with a range of screw head types plus a single pole voltage tester suitable for working at voltages of up to 1000v supplied in easily portable pouch wera 05003474001 kraftform kompakt vde 16 piece bit holder blades set