{TAIL ~ The scrubber drum} includes at least two sections each of which has {HEAD ~ a polygonal shaped, water tight interior chamber} 
{ TAIL ~ The scrubber drum } includes at least two sections each of which has { HEAD ~ a polygonal shaped , water tight interior chamber }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD