(57) Abstract Objective It fastens the purpose of this device, at brief, the removal afterThe for stud bolt which has the structure which can be done it fastens, the toolThere are times when you obtain. Constitution This device opening and closing the apex of the cone as fulcrum 2 sideOn the split aspect of the fastening section itself 1A which is split as possibilityTo provide the female screw section 1C which engages to stud bolt 4, thisOpening and closing the fastening section itself 1A being categorized to rim, pushing pressure possibilityProviding the structure which it tries to do with ring body 1BIt has made feature.
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