The compressed air rotates the driver bit (4) together with the drive gear (13) and the screw is screwed into the material to be struck.
通过压缩空气使上述螺丝批头 （4）与驱动齿轮（13）一起旋转，由此上述打入螺钉被打入到被打入 件中。
When the driver bit of the screw rod needs to be replaced, as long as the clip ring is gently pulled downward. The screw rod is turned and the clip ring is released.
需要更换螺丝杆刀头时，只要轻轻向后拉动卡环，调转螺丝杆再放开卡环即可。
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