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