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1·Cutlery set with screw, which can be treated as M6 or 4/1 tap wrench.

手柄后梅花孔有螺丝固定套装，另可作M6或4/1螺纹扳手用。

2·Therefore, the overthread screw tap can be matched with a pneumatic wrench having regular hexagonal holes via insertion, and the overthread screw tap has the advantage of high work efficiency.

其扭力段由正四棱柱形改为正六棱柱形的，这样可以与有正内六角孔的风动扳手相插配使用，有提高工效的特点。