{HEAD ~ A core pin tip} is made of drawn wire or is separately replaceable on {TAIL ~ the core pin} 
is separately replaceable on
{ HEAD ~ A core pin tip } is made of drawn wire or is separately replaceable on { TAIL ~ the core pin }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL