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