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