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。
2
The screwdriver bit base is provided with a magnet, and the handle is provided with a groove which can store various screwdriver bits.
刀头座装有磁石，手柄上有凹槽，可储存各种刀头。
3
Special Angle strengthened bit design intensifying blade protection and quickly leading powder into screw groove, which reduce resistance and improve in-aperture speed.