拥有自动防断丝锥功能；

Prevent tap from being broken.

youdao

目前，在机械加工工厂里，螺钉旋具和丝锥是较为常用的两种五金工具。

At present, screwdriver and screw tap are hardware which is often used in machining factory.

youdao

目前，在机械加工工厂里，螺钉旋具和丝锥是较为常用的两种五金工具。

At present, screwdriver and screw tap are hardware which is often used in machining factory.

youdao