The cylindrical sleeve 14 has {HEAD ~ an outer surface} 58 and {TAIL ~ an inner surface} 60 
The cylindrical sleeve 14 has { HEAD ~ an outer surface } 58 and { TAIL ~ an inner surface } 60
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH