{HEAD ~ The oil cylinder} is horizontally fitted to {TAIL ~ the main body} of the pipe bender 
is horizontally fitted to
{ HEAD ~ The oil cylinder } is horizontally fitted to { TAIL ~ the main body } of the pipe bender
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH