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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The utility model relates to a medical orthopaedics left-hand drill bit for drilling a left-hand thread hole. A metal drill rod is carved with a left-hand groove.

本实用新型涉及一种可以钻左旋丝孔的骨科医用左旋钻头，它是在一个金 属钻杆上镂刻有左旋凹槽。

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The power supply seems a bit depleted, especially while they wait for the return of Jeter, Teixeira, Granderson and A-Rod, who combined for 100 home runs last year.

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