Wera 05003990001 817 VDE Kraftform Kompakt Blade Holders allow for lightning-fast change of the required blade and thus a wide range of applications. Wera 817 VDE Kraftform Kompakt Blade Holder are designed with a Kraftform Plus handle for comfortable ergonomic screwdriving, which avoids blisters and calluses and feature hard handle zones for high working speeds, while soft handle zones guarantee a high torque transfer.