注：
  本产品具有钻孔、攻丝、扭力过载、保护丝锥
  等功能.
  适合在钻床、攻丝机、镗床、车床等设备攻丝.
  采用主体件内的磨擦片紧松,自如调节攻丝扭力
  大小.
  本体规范：GB1443-1985
1 Spindle conicity standard: GB1443-1985
2 With functions of dri l l ing, tapping, torque
  protection.
3 Used on radial dri l ls, dri l l ing attack
  machines, borers, lathes and so on for tapping.
4 Adopt the friction disk in main body to adjust
  tap power of the torque to steady skid and
  protection tap.

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