注：
  具有扭矩过载保护可防止丝锥断裂。
  具有浮动、伸缩、快换等功能。
  适合各种夹头加长和各种设备攻牙
  攻丝范围：M3-M24。    
1 Torque overload protection protects screw blank from
   fracture.
2 Have floating, quick change and torque protection
   functions.
3 Used on dri l l machines, tapping machines, borers,
   lathes and so on for tapping.
4 Tapping range: M3-M24.