作者: Franz Leibinger , Karl Leibinger
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摘要: A screwdriver is provided which engages the head of screw, and also grips screw. The screwdriving gripping assemblage may be readily interchanged with another in handle screwdriver. Opening closing jaws effective by sliding an outer sleeve surrounds form a part, other slidable on shaft comprises front part rear are rotatably connected together for rotation forward shaft, while held fixed.