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
TRAP WELL
The journal "modelist-Konstruktor" discharged since 1980, so are his longtime admirer. Could not write to the editorial Board decided for the first time. At school are addicted to design...
“JEEP” FOR THE TWINS
The "toy" industry is developing in exactly the same way as "adult", and tries to use it to create new and new designs of many of the achievements of modern science and technology. This...
