{HEAD ~ A portion} of {TAIL ~ the surface} 37b and the beveled surface at the converging end of the horse shoe, which is the cutting edge 37, has a layer of hardened material applied to improve the wear and self sharpening characteristics of the tooth 
of
{ HEAD ~ A portion } of { TAIL ~ the surface } 37b and the beveled surface at the converging end of the horse shoe , which is the cutting edge 37 , has a layer of hardened material applied to improve the wear and self sharpening characteristics of the tooth
HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH