The second wedge member is longitudinally displaceable relative to the first wedge member and together extends through {TAIL ~ the work piece} to engage a second rotatable portion of {HEAD ~ the machine} 
The second wedge member is longitudinally displaceable relative to the first wedge member and together extends through { TAIL ~ the work piece } to engage a second rotatable portion of { HEAD ~ the machine }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD