The attachment comprises {HEAD ~ a wheel guided, suction assembly} in which the slurry is contained in {TAIL ~ a shroud} 
The attachment comprises { HEAD ~ a wheel guided , suction assembly } in which the slurry is contained in { TAIL ~ a shroud }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL