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.
Recommend to read
BATTERY UNDER CONTROL
Any motorist knows that the state of charge of the battery must constantly monitor is required to control the pressure on it. This can be done by using electronic circuit which gives an...
PULL-PULL
Vices, clamps, presses, all these tools are mainly used for fixing, compression parts, in other words, working in compression. But sometimes it is necessary to solve the inverse problem:...
