The extrusion die 17 is used in {HEAD ~ conjunction} with {TAIL ~ an extrusion punch} 18 having a spherically shaped protrusion 19 
with
The extrusion die 17 is used in { HEAD ~ conjunction } with { TAIL ~ an extrusion punch } 18 having a spherically shaped protrusion 19
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH