The cambered end 92 of the brush core includes {HEAD ~ a pair} of {TAIL ~ aligned slots} 93, 94 which receive the keys 90, 91 of the cradle 85 
of
The cambered end 92 of the brush core includes { HEAD ~ a pair } of { TAIL ~ aligned slots } 93 , 94 which receive the keys 90 , 91 of the cradle 85
OTH 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