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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I want to give advice to those who will plaster the walls of the clay-sand mortar. To produce a smoother surface you can use glass containers, for example, the 3 — liter jar. When the...
