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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Despite the fact that the clamps clamping the Cup is loosely fitted on the axis and not rotate as you tighten, it can be rotated together with the screw, damaging the surface of the...
