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