Equipped with hydraulic holder and hand powered unscrewer, to untighen the drill rod easily.

附设液压夹持器，并配以手动御扣装置，使拆御钻杆更方便。

youdao

Equipped with hydraulic holder and hand powered unscrewer, to untighen the drill rod easily.

附设液压夹持器，并配以手动御扣装置，使拆御钻杆更方便。

youdao