F1 Used DA SHUN Nut Former     
5-Die 5-Blow 17B(~19B) x 10~30L

F1-1 DA SHUN Nut Former F1-2 DA SHUN Nut Former F1-3 DA SHUN Nut Former
F1-4 DA SHUN Nut Former F1-5 DA SHUN Nut Former F1 SPEC