The bit assembly comprises an elongated housing having a first end adapted for {HEAD ~ engagement} with {TAIL ~ the drill} and a second end, including the cutting cone, for engaging the material to be drilled 
with
The bit assembly comprises an elongated housing having a first end adapted for { HEAD ~ engagement } with { TAIL ~ the drill } and a second end , including the cutting cone , for engaging the material to be drilled
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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