If desired, {HEAD ~ the spring} 34 may be in {TAIL ~ the form} of a hollow tube, with a diameter in the range of from two to five inches 
in
If desired , { HEAD ~ the spring } 34 may be in { TAIL ~ the form } of a hollow tube , with a diameter in the range of from two to five inches
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH