In the illustration of FIG 1, the adapter blocks are arranged for {HEAD ~ compatibility} with rod and connector subassemblies incorporating {TAIL ~ a specific size} of rod 
In the illustration of FIG 1 , the adapter blocks are arranged for { HEAD ~ compatibility } with rod and connector subassemblies incorporating { TAIL ~ a specific size } of rod
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH