SECRET SCREW

SECRET SCREWIf 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

  • WHO IS FASTERWHO IS FASTER
    You've probably heard: "he's Got good reflexes." Thicket just as they say about athletes. For example, the goalkeeper. He must react instantly to the ball rapidly flying into the net. Or...
  • THE TRUNK OF THE CARTHE TRUNK OF THE CAR
    Who more who less, but there is a need to transport long or bulky cargo which does not fit inside of the car. Designers have already come up with for these purposes a versatile...