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