Toolkit allen key. Despite its compact dimensions, the high-quality toolkit by Wiha provides a highly ergonomic handle in order to effortlessly carry out installation works with pocket knives. The quality bits ensure an optimum fitting accuracy and safe handling. They are securely stored inside the handle. The Boker Toolkit Allen Keys comprises the Allen Keys 1.5 / 2 / 2.5 / 3 / 4 / 5.