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