The clutching arms are symmetrically mounted on the main body by the fixing plates thereof fixed on {HEAD ~ two opposite sides} of {TAIL ~ the main body} 
of
The clutching arms are symmetrically mounted on the main body by the fixing plates thereof fixed on { HEAD ~ two opposite sides } of { TAIL ~ the main body }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL