The axial regulator is adjusted to adjust the diameter of the toolbit.
调整轴向调整装置，就可以调整刀头的直径。
2
The handle of the foldable screwdriver is provided with a control button which is used for controlling switching-on and shutting down of the toolbit.
其刀柄上装有控制揿钮来控制刀头的开启和关闭，使用非常方便。
3
Because the toolbit and the tool bar are is fixed together by the tapering shape positioning device, the toolbit can be dismounted from the tool bar to make a multi-purpose tool bar.