{HEAD ~ The bracket diameter} is measured from a center axis extending through {TAIL ~ a center} of the truncated cone 
{ HEAD ~ The bracket diameter } is measured from a center axis extending through { TAIL ~ a center } of the truncated cone
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH