{HEAD ~ a second sleeve} surrounding {TAIL ~ the first mentioned sleeve} and of a material substantially more resistant to wear than the first sleeve; the cover being molded on the yoke, and forming a separate element complementarily fitted to the yoke 
surrounding
{ HEAD ~ a second sleeve } surrounding { TAIL ~ the first mentioned sleeve } and of a material substantially more resistant to wear than the first sleeve ; the cover being molded on the yoke , and forming a separate element complementarily fitted to the yoke
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH