{HEAD ~ A first and second mounting portion} is connected to each of the at least one tool support structure and is connectable to a first and second mount on {TAIL ~ a base}, respectively 
is connectable on
{ HEAD ~ A first and second mounting portion } is connected to each of the at least one tool support structure and is connectable to a first and second mount on { TAIL ~ a base } , respectively
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH