self-drill screw 自钻钉

Self drill screw 自钻螺丝

screw-feed drill 螺旋钻机

left-hand screw drill pipe 左螺旋钻杆

screw-feed diamond drill 螺旋给料式金刚石钻机

screw extractor and drill kit 螺栓取出器套装工具

Screw drill 螺旋钻 ; 螺丝钻

screw drill rod 螺杆钻杆

stages of screw drill 螺杆钻具级数