A screwdriver with a spiral in the handle so the blade rotates with downward pressure on the handle.
手柄上有螺旋可以使刃片有向下的压力旋转的螺丝起子。
And the screwdriver heads are fixed to the stem casing making use of the attractive force of magnetic iron.
利用磁铁的吸引力安装及固定于锥杆套上。
The whole screwdriver has the advantages of simple and compact structure, low cost and convenient and effective operation.
整个工具结构简单紧凑, 成本低廉, 使用起来方便有效。
Our corporation is specialized in manufacturing socket, connecting rod, screwdriver, combination tools and auto maintenance tools.
生产套筒，接杆，螺丝批，组合工具和汽车修理工具。
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