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
WING — ON THE RISE
The peculiarity of the proposed model rocket class "Hawk" — the displacement of the wing at takeoff. As this increases the area of the tail section, shifting the center of pressure of...
CANNED AT HOME
Of corned beef or tinned fish, hardly anyone will refuse. Delicious, ready to eat products, although factory made! And why, in fact, the only factory? Enough to hold of in mini-autoclave...
