If the head of the screw to give with the help of nalilsya the form shown in the figure, then any attacker will not be able to turn. On such hardware it is recommended to set sensible things sailing and motor boats, hook locks.
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It is not easy to drill pipe, clamped it in a vise and nukernel. The task will be made easier if you resort to using a small block of wood. It is administered in the Vice with the tube...
