{HEAD ~ The tooth} of {TAIL ~ this invention} includes a beveled surface 37a and a hole 37c for mounting the tooth at a flat surface 37b which is the backside of the tooth as it is in cutting position 
{ HEAD ~ The tooth } of { TAIL ~ this invention } includes a beveled surface 37a and a hole 37c for mounting the tooth at a flat surface 37b which is the backside of the tooth as it is in cutting position
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