a plurality of extensions integrally formed with said sleeve flange and projecting inwardly toward {TAIL ~ the interior} of said {HEAD ~ sleeve wall} 
a plurality of extensions integrally formed with said sleeve flange and projecting inwardly toward { TAIL ~ the interior } of said { HEAD ~ sleeve wall }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD