{HEAD ~ A pair} of handles and a pair of {TAIL ~ toggle links} are pivotally attached to the two arms for effecting a mechanical advantage during the shearing and insertion process 
{ HEAD ~ A pair } of handles and a pair of { TAIL ~ toggle links } are pivotally attached to the two arms for effecting a mechanical advantage during the shearing and insertion process
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH