In FIG 10, it is shown how {HEAD ~ the outer part} 3 has been designated with {TAIL ~ appropriately shaped gripping surfaces} 19, which are suitable for compression, traction, and torsion 
designated with
In FIG 10 , it is shown how { HEAD ~ the outer part } 3 has been designated with { TAIL ~ appropriately shaped gripping surfaces } 19 , which are suitable for compression , traction , and torsion
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH