The extension member extends outwardly from the outer periphery in a first direction of {HEAD ~ the imaginary line} for rotating {TAIL ~ the main body} 
for rotating
The extension member extends outwardly from the outer periphery in a first direction of { HEAD ~ the imaginary line } for rotating { TAIL ~ the main body }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL