{HEAD ~ A radially outward surface} of each of {TAIL ~ the bars} is connected to a respective radially inner surface of each of the rings 
{ HEAD ~ A radially outward surface } of each of { TAIL ~ the bars } is connected to a respective radially inner surface of each of the rings
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH