本发明属五金工具领域，是一种能对孔进行攻丝的螺钉旋具。
The invention discloses a screwdriver which can tap the hole, belonging to the field of hardware tools.
目前，在机械加工工厂里，螺钉旋具和丝锥是较为常用的两种五金工具。
At present, screwdriver and screw tap are hardware which is often used in machining factory.
为更好地完成功能，本发明所提供螺钉旋具的旋柄上还设计有加力装置。
To have better function, the rotating handle of the screwdriver is provided with a force applying device.
为更好地完成功能，本发明所提供螺钉旋具的旋柄上还设计有加力装置。
To have better function, the rotating handle of the screwdriver is provided with a force applying device.
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