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