The central through hole 311 communicates with a seamless die cavity 33 in the body 30 of the inner die 3, {HEAD ~ a neck} 32 is formed between the stop portion 31 and {TAIL ~ the body} 30 
is formed between
The central through hole 311 communicates with a seamless die cavity 33 in the body 30 of the inner die 3 , { HEAD ~ a neck } 32 is formed between the stop portion 31 and { TAIL ~ the body } 30
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH