In this regard, the cross section of {HEAD ~ the periphery} of {TAIL ~ the housing} 63 typifies a trapezoid while the dust bag cross section is maintained as a rectangle 
In this regard , the cross section of { HEAD ~ the periphery } of { TAIL ~ the housing } 63 typifies a trapezoid while the dust bag cross section is maintained as a rectangle
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH