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