{HEAD ~ A lifting mechanism} for a head member of a pipe bender includes a connecting block and {TAIL ~ an oil cylinder} 
{ HEAD ~ A lifting mechanism } for a head member of a pipe bender includes a connecting block and { TAIL ~ an oil cylinder }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL