The outer surface is secured to {TAIL ~ the inner cavity} of {HEAD ~ the T} shaped two piece housing 
The outer surface is secured to { TAIL ~ the inner cavity } of { HEAD ~ the T } shaped two piece housing
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH