The silencer 1, wherein the fibers of {TAIL ~ the fibrous material} have a maximum length of {HEAD ~ 5 mm} 
The silencer 1 , wherein the fibers of { TAIL ~ the fibrous material } have a maximum length of { HEAD ~ 5 mm }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD