Drill chuck where the clamping force is produced by turning a crown gear with the help of a gear-shaped chuck key.
Allen keys, open or ring spanners and chuck keys can be stored in key deposits or key holders which are attached to the power tool itself or to its mains cable.
Drill chuck which can be tightened and released without a chuck key and only requires manual force.
Kilowatt hour [kWh]
The kilowatt hour is the unit of measurement which serves as the basis for bills sent to consumers by electricity suppliers in Germany.1 kWh means that the customer consumed 1000 W (1 kW) from the power supply network for one hour.