A replaceable cutting element is provided which is easily changed at {HEAD ~ the job site} with {TAIL ~ conventional hand tools} 
with
A replaceable cutting element is provided which is easily changed at { HEAD ~ the job site } with { TAIL ~ conventional hand tools }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL