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
BELT KEY
With it easy to turn tightly wound cover and the clutch. In this tool, as the tape uses a rubber strip with a thickness of about 3 mm, width 22 mm and length of 450 mm. If you want to...
HELPFUL BRUSH
To clean the inside of the tube or a long narrow cavity is not so simple. This can help "brush" like how to wash their bottles, only to make it necessary from segments of a steel cable....
