Gas/vacuum and fracturing fluid are supplied to hand piece 36 via {HEAD ~ a set} of {TAIL ~ supply lines} 42 and 44 respectively 
of
Gas / vacuum and fracturing fluid are supplied to hand piece 36 via { HEAD ~ a set } of { TAIL ~ supply lines } 42 and 44 respectively
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH