Wera Kraftform Big Pack 900 Chiseldriver Screwdriver Set 15 Pieces 05133285001Wera Chiseldriver set for fastening, chiselling and loosening seized screws. Multi component Kraftform handle for fast and low fatigue working: hard gripping zones for high working speeds whereas soft zones ensure high torque transfer. A hexagon blade out of high quality bit material that extends right through the blade ensures full transfer of force, even when struck with a hammer. The ductile tempered material prevents the blade from splintering or