The polygonal shape of {TAIL ~ the scrubber chambers} contributes to {HEAD ~ a greatly improved washing and disintegrating action} on the material being treated 
The polygonal shape of { TAIL ~ the scrubber chambers } contributes to { HEAD ~ a greatly improved washing and disintegrating action } on the material being treated
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH